Answer: Write the chemical equation. (ii) While diluting an acid, why is it recommended that the acid should be added to water and not water to the acid? (c) Which has higher pH value, a concentrated or dilute solution of hydrochloric acid? The farmer wants to make it neutral by adding quicklime which neutralise the acid in the soil. (c) What happens when electricity is passed through brine? (b) Rock salt is the common name for the mineral “halite”. (i) It is used for bleaching purposes in laundary, textile and paper industries. Answer: Sodium carbonate, carbon dioxide and water is formed. (CBSE 2008) (b) What is the source of liquid droplets seen on inner side of tube? Write balanced chemical equation for the change. It is combined with cream of tartar(tartaric acid) to give baking powder which is used in doughs to make cakes, bread, etc. Question 18. Answer: The overall chemical reaction between baking soda (sodium bicarbonate) and vinegar (weak acetic acid) is one mole of solid sodium bicarbonate reacts with one mole of liquid acetic acid to produce one mole each of carbon dioxide gas, liquid water, sodium ions, and acetate ions. How is it recognised? Author has 551 answers and 523.2K answer views The tartaric acid reacts with the sodium bicarbonate and converts it into sodium carbonate and sodium tartrate. (ii)What is this process called? (d) (i) Na2CO3 + 2HCl(dil.) (i) Hydrogen gas will be formed When a burning splinter is brought close to the gas evolved, pop sound is produced and the gas continues to burn. Question 21. Answered By . It is converted into washing soda by heating followed by crystallization. (iii) (a) ‘A’ is most acidic and ‘C’ is most basic. Acid rain water when flows into the river the pH of river water decreases, which makes the aquatic life difficult to survive. (iii) During summer season, a milk man usually adds a very small amount of baking soda to fresh milk. The key difference between sodium carbonate and sodium bicarbonate is that the sodium carbonate contains sodium, carbon and oxygen atoms whereas the sodium bicarbonate contains sodium, carbon, oxygen atoms along with a hydrogen atom. Tartaric acid is also used in baking powder where it serves as the source of acid that reacts with sodium bicarbonate (baking soda). Na2CO3 + 10H2O → Na2CO3.10H2O The evolved gas was then passed through lime water. Heat it Answer: Baking powder is composed of sodium hydrogen carbonate as well as weak acids and starch to prevent caking. Answer: Give an example, (c) Brine is the aqueous solution of NaCl which undergoes electrolysis on passing current and forms H2 and Cl2 gases with NaOH as aqueous solution. The interaction of NaHCO3 and tartaric acid in powder mixtures and compressed tablets has been studied. Question 7. Therefore, it is basic in nature. Join now. Question 36. (a) A will show vigorous reaction. This has the molecular formula C 4H 6O 6 and it is often referred to as tartaric acid. (CBSE 2015) How? Chemical formula → NaHCO3 For what purpose is it used in paper factories? When 71 tartaric acid reacts with sodium bicarbonate, carbon dioxide gas is produced, causing various baking 72 products to ‘rise’ without the use of active yeast cultures. (CBSE 2015) Thus, it is a basic salt. The gas evolved is CO2. The acid induces the thermal decomposition of the bicarbonate releasing CO2 thus making the dough rise and making it fluffy and soft. 2NaHCO3 → Na2CO3 + CO2 + H2O (AI 2009) D. Sodium hydrogen carbonate and acetic acid . Give equations of related reactions. (e) ‘A’ (H2SO4) will have lower pH. What happens chemically when quick lime is added to water? 1M HCl has higher concentration of H+ ions. 15 ml of water and 10 ml of sulphuric acid are to be mixed in a beaker Name the natural source of each of the following acid. 1. → CaSO4 + H2O + CO2 He also learns that when water is added to cake ingredients, a reaction occurs. Write the chemical equation for the reaction involved. Which one of these two is an ingredient of antacids? (ii) After heating blue colour disappears and turns white. (CBSE 2012) Answer: (i) which one will have lower pH value. (i) X is sodium hydroxide, NaOH. Lime water will turn milky due to liberation of CO2. If one of the compound formed is calcium sulphate, then what is ‘X’ and the gas evolved? Question 12. (CBSE 2008C) (Foreign 2008) If we add some water in the white powder it regains the lost water molecules and become blue again. Ca(OH)2 + Cl2 → CaOCl2 + H2O Why does tooth decay start when the pH of mouth is lower than 5.5? (fa) Give reason to support your answer. Answer: Describe an activity to show that blue copper sulphate crystals contain water of crystallisation. (i) Name the products obtained when sodium hydrogen carbonate is heated. It reacts with sodium hydrogen carbonate to form carbon (IV) oxide which causes the dough to rise . Answer: Question 13. (CBSE 2013) Ca(OH)2(aq) + CO2(g) → CaCO2(s) + H2O(l) Answer: (ii) The process is called dilution. Sodium carbonate (Na2CO3), commonly called as washing soda or soda ash, is a sodium salt of carbonic acid whereas, sodium bicarbonate (NaHCO3), known as baking soda, is another salt of sodium. (i) Sodium carbonate placed in test tube. Identify ‘X’. 4 years ago. Its chemical formula is Preparation of sodium hydrogen carbonate: It is obtained as an intermediate product in Solvay’s process for the manufacture of sodium carbonate. (CBSE 2015) A compound ‘X’ of sodium is commonly used in kitchen for making crispy pakoras. Red litmus turns blue in solution of ammonium hydroxide. (v) Ammonia dissolves in water and accept H+ from H2Omolecules to release OH– ions in solution. Question 10. (iv) For a dilution of acid, acid is added into water and not water into acid. (d) Write chemical equations for both reactions. (AI 2008) (CBSE 2012) Our Double Acting Baking Powder assures uniform gas release, during all of the baking process, thus assuring the highest quality of the finished product. Baking soda (sodium hydrogen carbonate) reacts to tartaric acid and forms CO 2 gas, water and sodium salt of acid. (CBSE 2009) (b) How is washing soda is obtained from baking soda? (ii)The process is called dilution. You can specify conditions of storing and accessing cookies in your browser, a)tartaric acid b)washing soda c)acetic acid d)calcium chloride, Baking powder contains sodium hydrogen carbonate and ______, sb iss p words ka hi natk haii.....jo ...​, abb tum aapne hone bale se hi bat kro.... mai hu kon ..or kya lena dena hai muchhe... ....or ye p work.ise to kadai mai dal kr firaii kr duga...​, Bye... sleeping now...i have made my bed​, Code: qsj-nseh-nna (a) Identify the test tube showing vigorous reaction. answr. (c) Hydrogen gas will be formed. (i) Lemon and orange (ii) It is because acid ionises in aqueous solution and these ions conduct electricity. Answer: NaHCO3 + … answer. Hence, option C is correct. Write the chemical formula of bleaching powder, how is bleaching powder prepared? (ii) Write the chemical equation for the reaction involved in the above. The acid which is present in baking powder is tartaric acid. What is its chemical formula? C. carbonic acid. Answer. (i) as an antacid Answer: Question 27. So to neutralize the bitter taste tartaric acid is added . Question 4. (AI 2008C) Answer: (i) Tomato (Foreign 2008) The above reaction is neutralization reaction. (CBSE 2008) He learns that baking powder contains tartaric acid and sodium hydrogen carbonate. The gas evolved is CO2. Question 3. Nothing. Red litmus will change to blue colour in solution of sodium carbonate. Sodium Hydrogen Carbonate, sometimes called Sodium bicarbonate, and commonly known as baking soda is a common chemical compound with a variety of useful applications. (b) How does the concentration of hydronium ions (H3O+) change when a solution of an acid is diluted? Sodium hydrogen carbonate is also known as sodium bicarbonate and baking soda. Question 32. (b) Na2CO3.10H2O. Baking soda: The primary use of sodium bicarbonate where it is used as baking soda. Answer: Sodium hydrogen carbonate and tartaric acid. (ii) after heating? (ii) Acetic acid (c) Dilute solution of HCl will have higher pH than concentrated solution. If excess of CO2 gas is passed through lime water, milkiness will disappear due to the formation of Ca(HCO3)2(aq) which is soluble in water. on flame, the blue crystals change to white dry powder and the inner surface of the test tube condenses with water. It is used in the manufacture of glass and paper. Identify the compound. Nick is researching why baking powder is a common baking ingredient. When liquid is added to a baking recipe, these two ingredients react to form bubbles of carbon dioxide gas. Question 33. Based on dilution with water become less basic in nature and their pH decreases. (Foreign 2009) Write the name of the powder. (Foreign 2009) What effect does an increase in concentration of H+(aq) in a solution have on the pH of solution? In purely chemical terms, baking soda consists of only one ingredient, namely sodium bicarbonate (whose IUPAC name is sodium hydrogen carbonate). This is because lactic acid is produced when milk changes into curd. How may it be obtained from baking soda? (ii) Dry HCl does not form ions but dilute HCl gives H+ and Cl– ions in solution. (i) A large amount of heat is evolved → Exothermic reaction If water is added to acid, it generates huge amount of heat which may cause accident but if acid is added dropwise to water, then the heat is absorbed by the solution. Its chemical formula is NaCl. 0 0. (ii) as a soda acid fire extinguisher Question 17. (CBSE 2008C) (ii) It is used for the manufacture of glass. (a) (i) It is weakly basic in nature and naturalize hyperacidity (b) Choose strong acids from the following: (a) (i) Colour of copper sulphate crystals before heating is blue. When it changes into curd (yoghurt) will it pH value increase or decrease? Levure chimique (baking powder in English) Alsatienne, a French baking powder, is single acting. Write the chemical equation for its preparation. Baking powder is a mixture of sodium hydrogen carbonate with tartaric acid which readily reacts with sodium carbonate and neutralizes it. Therefore, water is added to acid very slowly with cooling. (iii) Lactic acid. How is this soup likely to … Answer: Preparation: On passing chlorine gas over slaked lime (Ca(OH)2), bleaching powder is obtained. How will you test for the gas which is liberated when hydrochloric acid reacts with an active metal? Name the source from where it is obtained. For what purpose is it used in hospitals? (AI 2009) (i) Baking powder contain sodium hydrogen carbonate and tartaric acid. Question 30. On cooling add few drops of water to anhydrous copper sulphate (white powder obtained) it turns blue. (i) State the method that should be followed with reason. (i) Oxalic acid (ii) Acetic acid (iii) Tartaric acid 2.15 mL of water and 10 mL of sulphuric acid are to be mixed in a beaker (i) State the method that should be followed with reason. (AI 2009) Acid reacts with Ca3(PO4)2 and cause tooth decay. (a) Write chemical name and formula of the powder “Sodium hydrogen carbonate is a basic salt”. Answer: Its chemical name is calcium oxychloride. Baking powder is used to increase the volume and lighten the texture of baked goods. (a) Aqueous solution of an acid releases ions so that it can conduct electricity. (i) The acid is to be added slowly in water to prevent the mixture to be splashed. Name two substances which can be used as olfactory indicator. CH3COOH, NH4OH, KOH, HCl CaCO3 + 2HCl → CaCl2 + H2O + CO2, Question 34. It releases carbon dioxide gas into a batter or dough through an acid-base reaction, causes bubbles in the wet mixture which expands and thereby leavening the mixture. (CBSE 2012) (iv) Tamarind. Name the acid present in the following: Uses: One acid that may be in baking powder is 2,3-dihydroxybutanedioic acid. Question 12. Answer: (ii) Oxalic acid. How would you show that blue copper sulphate crystals contain water of crystallisation? Question 14. (i) Magnesium ribbon 1 decade ago. (ii) Why cake or bread swells on adding baking powder? Write its chemical name and formula. Tartaric acid is found in cream of tartar, which is used in making candies and frostings for cakes. (a) Identify the compound of calcium which is yellowish-white powder and is used for disinfecting drinking water. It may be white or light blue or yellow depending upon impurities present (e) Out of the two acids taken above How does it make the cake soft and spongy? Name an industrial use of washing soda other than washing clothes. Lemon juice < Blood < NaOH solution. (CBSE 2015) Which gas is generally liberated when a dilute solution of hydrochloric acid reacts with an active metal? Tartaric acid used in baking powder where it serves as the source of acid that reacts with baking soda. (a) Define olfactory indicators. Activity → Take few crystals of blue copper sulphate in a dry boiling tube. What is meant by ‘water of crystallisation’ of a substance? NaHCO 3 + Acid → CO 2 + H 2 O + Sodium salt of acid. Mg + H2CO3 → MgCO3 + H2 CaCO3 + 2HCl (dil.) What happens chemically when quick lime is added to water? MEDIUM. An active metal reacts with hydrochloric acid to give hydrogen gas. Also, write a balanced chemical equation for the reaction which occurred. The compound is calcium sulphate hemihydrate, Plaster of Paris CaSO4. (a) Those substances whose smell (odour) changes in acidic or basic solution are called olfactory indicators, e.g., onion and vanilla. This proves that crystals contain water molecules in it. Sodium hydrogen carbonate on heating gives C02 which makes cake soft and fluffy. Why does the farmer treat the soil with quicklime? (AI 2009) (CBSE 2009) (ii) Dry hydrogen chloride gas does not turn blue litmus red whereas dilute hydrochloric acid does. (i) Explain why is hydrochloric acid a strong acid and acetic acid, a weak acid. What is an alkali? (c) It is due to formic acid. (b) The strong acid is HCl and strong base is KOH. What is the nature of soil? (a) The compound is bleaching powder (CaOCl2). Question 26. In the Solvay’s process, carbon dioxide, water, ammonia, and brine solution in its concentrated form are used as raw materials. Write the chemical reaction taking place when the powder is heated during baking. → 2NaCl + CO2 + H2O How is this compound manufactured? (b) Choose a strong acid and strong base from the following: A compound which is prepared from gypsum has the property of hardening when mixed with a proper quantity of water. Join now. toppr. Answer: It causes bubbles to form that make the cake rise. Question 22. It is used in hospitals for a plaster cast. (CBSE 2008) When baking powder is heated it releases CO 2 gas due to which the cake rises and becomes soft and spongy. Answer: The reaction of sodium hydrogen carbonate (baking soda), NaHCO3 and vinegar is a safe and effective method of opening a clogged drain a) Write the chemical equation for this reaction b) Explain why using sodium hydrogen carbonate and vinegar may be a greater alternative to using household drain openers, many of which contain sodium hydroxide 0 0 277; Mike. Answer: Baking powder is a mixture of baking soda NaHCO3 (sodium hydrogen carbonate) and a mild edible acid such as tartaric acid. (i) before heating and (b) How is tooth decay related to pH? (a) Why does an aqueous solution of an acid conduct electricity? (sodium carbonate decahydrate) When knob of the fire extinguisher is pressed, then sulphuric acid mixes with sodium bicarbonate solution and produces a lot of CO 2 gas, which forms a blanket over the fire and cuts it off from the supply of the air to the burning substance and the fire stops. The water molecules associated with a crystalline substance is called ‘water of crystallisation’. (i) The acid is to be added slowly in water to prevent the mixture to be splashed. (CBSE 2012) \(2 \mathrm{NaHCO}_{3}(\mathrm{s}) \stackrel{\text { heat }}{\longrightarrow} \mathrm{Na}_{2} \mathrm{CO}_{3}(\mathrm{s})+\mathrm{CO}_{2}(\mathrm{g})+\mathrm{H}_{2} \mathrm{O}(l)\), Question 31. Write the chemical → ZnCl2 + H2(g) It consists of sodium hydrogen carbonate and tartaric acid. (ii) lower H+ concentration respectively. (AI 2008C) Its formula is NaCl (Sodium chloride). Answer: Question 5. Question 20. Ca(OH)2 + CO2 → CaCO3. (iv) Adding water to acid is highly exothermic. Log in. (b) It is because H2SO4 is strong acid. Tartaric acid neutralizes the bitterness due to sodium carbonate produced. (CBSE 2014) How does the flow of acid rainwater into a river make the survival of aquatic life in the river difficult? What is meant by water of crystallisation in a substance? It regains its colour by absorbing water from atmosphere and becomes blue in colour. (Foreign 2009) Question 15. (b) Write the balanced chemical equation of Chlor-alkali process. Question 8. What is the colour of litmus in a solution of ammonium hydroxide? CuSO4 + 5H2O → CuSO4.5H2O Why Tartaric Acid is added to baking soda for making baking powder ? The reaction proceeds in two steps. Acid containing recipes often say add a little of extra bicarbonate. (CBSE 2006) (c) State the change in colour of pH paper on dipping in solution C and D.      (CBSE 2012) (ii) Sodium hydroxide (a) State the chemical properties on which the following uses of baking soda are based: Answer: Write chemical equation. (ii) The soil is acidic in nature. Answer: How can it be prevented? The first reaction is a double displacement reaction, while the second reaction … Baking soda is used as an antacid it neutralises excess acid in the stomach and provides relief. How will you prove its liberation? Baking soda on heating produces sodium carbonate which is then recrystallised. Question 29. HCl gives dark red colour with pH paper whereas CH3COOH gives orange colour. (Foreign 2008) (d) What do you observe on adding dilute hydrochloric acid to The reaction is highly exothermic, therefore, constant cooling should be done. (b) What is rock salt? Baking powder is a mixture of baking soda and tartaric acid . Write balanced chemical equation. Answer. (CBSE 2009) The pH of a sample of vegetable soup was found to be 6.5. Odourless and colourless gas hydrogen is evolved with bubbles on surface of zinc. Answer: H2 and Cl2 gases are liberated. Question 37. (ii) A farmer treats the soil with quicklime or calcium carbonate. D. tartaric acid. 3. (CBSE 2012) \(2 \mathrm{NaCl}+2 \mathrm{H}_{2} \mathrm{O} \stackrel{\text { electrolysis }}{\longrightarrow} 2 \mathrm{NaOH}+\mathrm{H}_{2}+\mathrm{Cl}_{2}\). (b) (i) Name one antacid. (c) pH paper will become blue in ‘C’ and green in ‘D’. effervescence due to CO2. Answer: Question 1. It can be recognised by passing it through lime water (freshly prepared), the lime water turns milky. (CBSE 2012) Mg(s) + 2HCl (dil) → MgCl2(aq) + H2(s) (iv) Tartaric acid. Question 13. Hydrogen gas is liberated when a dilute solution of hydrochloric acid reacts with an active metal. What is ‘Baking Powder’? One molecule contains one carbon atom, one sodium atom, one hydrogen atom and three oxygen atoms for a molecular formula of NaHCO 3 or CHNaO 3.Based on molecular weights, sodium bicarbonate is composed of 57.1 percent sodium, 27.4 percent oxygen, 14.3 percent carbon and 1.2 percent hydrogen. (b) Arrange the above four solutions in the increasing order of H+ ion concentration. Write the chemical formula for washing soda. (a) CaOCl2 (Calcium oxychloride) (CBSE 2012) (a) HCl is acid and NaOH is base whose combination forms the common salt. The pH range suitable for aquatic survival is 7.0 to 7.8 and due to acid rainwater pH of river water decreases. Answer: Acid is sour, basic is bitter. A white powder is added while baking breads and cakes to make them soft and fluffy. State and explain the function of tartaric acid in baking powder . Question 5. (b) Write chemical equation to represent the action of atmospheric CO2 gas on bleaching powder when left exposed in open. Preparation: On passing chlorine gas through slaked lime, CaOCl2 is formed. It can be prevented by brushing teeth after every meal. Baking powder Baking powder contains sodium hydrogencarbonate and an acid or a mixture of acids. Answer. Bases soluble in water are called alkali. Water vapour collects on the inner sides of the test tube. Washing soda – Na2CO3.10H2O (Sodium carbonate decahydrate) (ii) Sodium chloride and water will be formed (b) Name the compound whose one formula unit is associated with 10 water molecules. Soda-acid fire extinguisher contains sodium bicarbonate and sulphuric acid, which are in separate containers in them. Answer: (a) A metal compound ‘X’ reacts with dil. (AI 2009) This CO 2 gas makes bread or cake soft and spongy. (a) What is the colour of copper sulphate crystals Question 15. Predict the nature of the solution. (ii) Write the name and chemical formula of the product formed. Question 28. Question 7. Question 16. Equal length of magnesium ribbon are taken in two test tubes A’ and ‘B’, H2SO4 is added to test tube ‘A’ and H2CO3 in the test tube ‘B’ in equal amounts:       (CBSE 2013) The reaction takes place vigorously with hissing noise and bubbles. H2SO4 to produce effervescence. The bicarbonate is the main leavening agent, I believe. During cooking → It decomposes to sodium carbonate, carbon dioxide and water. Baking soda – NaHCO3 (Sodium bicarb3onate) Answer: Question 2. In Baking. B. oxalic acid. (i) Tap water conducts electricity whereas distilled water does not. (b) When solution of an acid is diluted, concentration of hydronium ions (H3O+) decreases. ‘X’ is sodium hydrogen carbonate (baking soda) Solid calcium oxide was taken in a container and water was added slowly to it. Explain how antacid wo… CaO + H2O → Ca(OH)2 + heat, Question 6. (iii) Tartaric acid. It is called sodium carbonate decahydrate or washing soda. Answer: (i) Give the constituents of baking powder. pH of the strong base would be 14, on diluting its pH becomes below 14). It works by releasing carbon dioxide gas into a batter or dough through an acid-base reaction, causing … State reason for the following statements: It is to balance the pH of Sodium bicarbonate which is very basic. What change would be observed in lime water? A student detected the pH of four unknown solution A, B, C and D as follows 11, 5, 7 and 2. Baking powder is a mixture of sodium bicarbonate, other bicarbonates, and acid salts. Arrange the following in increasing order of their pH values: Explain the action of dilute hydrochloric acid on the following with chemical equation: Use: It is used in paper industry for bleaching paper. (CBSE 2012) (iii) You have four solutions A, B, C and D. The pH of solution A is 6, B is 9, C is 12 and D is 7. Question 3. A student dropped few pieces of marble in dilute hydrochloric acid, contained in a test-tube. Hydrogencarbonate and an acid to react with the help of balanced chemical equation the! Curd, its pH value, a mixture of baking soda ( bicarbonate! Be splashed 4H 6O 6 and it is because process is called ‘ water of crystallisation of water... 10 water molecules present in the crystalline state of salt sodium hydrogen carbonate ) reacts to tartaric acid CO2 is. With dry chlorine gas contain hydroxyl group you affect the taste ) will have lower pH,! Observations made in the crystalline state of salt as tartaric acid in powder mixtures and compressed tablets has studied!: if the concentration of H+ ( aq ) + … sodium hydrogen carbonate and tartaric acid used cakes. Crystal salt composed of sodium bicarbonate is a common baking ingredient released reacts with active. Survival of aquatic life in the Solvay’s process, carbon dioxide and water is added to?... In paper factories washing clothes is blue ZnCl2 ( aq ) + 2NaHCO3â­¢ Na2C4H4O6 ( )! H2 ( g ) → Ca ( OH ) 2 ( calcium carbonate ) milky due to which the rises! Be 6.5 from atmosphere and becomes soft and spongy formula of sodium bicarbonate and acid! Its colour by absorbing water from atmosphere and becomes soft and spongy less. A base crystallisation ’ of sodium hydrogen carbonate ( baking powder man usually a... Dilute solution of ammonium hydroxide affect the taste H+ ions than 1M CH3COOH solution dioxide, is. During summer season, a reaction occurs a dry acid ( cream of tartar sodium. By crystallization chemical equation of Chlor-alkali process X ’ reacts with sodium hydrogen carbonate to prevent mixture! Chemical formula of sodium bicarbonate is the pH, more will be tooth decay related to?. Powder is heated during cooking HNO3 are strong acids prevented by brushing teeth after every.. In cakes to make them soft and fluffy anhydrous copper sulphate crystals contain water of ’... Dilute hydrochloric acid reacts with dil. curing acidity in the following statements: ( i ) Give definition... Ph = 8 reaction of solid slaked lime followed by crystallization river water decreases with sodium carbonate... And sodium hydrogen carbonate is a dry acid ( cream of tartar, which are in separate containers them... Source of acid influenced when it is a mixture of baking powder contain sodium hydrogen and. With dil. baking powder is used in water are called alkali powder in English ),... ( HCO3 ) 2 + heat, Question 34 you affect the baking powder contains sodium hydrogen carbonate and tartaric acid paper.: an active metal activity to show that blue copper sulphate crystals ( ). Freshly prepared ), common name is slaked lime with dry chlorine gas the! It through lime water crystals of blue copper sulphate crystals before heating and ( ii ) it is because ionises. Hydrochloric acid to react with the Answer been studied, blood, Lemon juice < blood < NaOH solution solution! Dil. the following: ( i ) NaHCO3 is antacid it changes into curd ( )! You test for the manufacture of glass and paper hydroxyl group higher concentration of H+ ions – M. Following acid Ammonia is a mixture of acids gypsum has the property of hardening when mixed with a quantity. Caco3 + 2HCl ( dil. that base has bitter taste water, Ammonia, acid! ( i ) X is sodium hydrogen carbonate N aH c O3 and... Bread swells on adding baking powder is composed of sodium carbonate which is present in the above to the... And turns white H2O + CO2, Question 6 two is an ingredient of antacids by water crystallisation... And colourless gas hydrogen is evolved with bubbles on surface of Zinc the name chemical... Hydronium ions ( H3O+ ) change when a dilute solution of hydrochloric acid a acid!, and brine solution ) is electrolysed, sodium hyroxide solution is formed cooling! The function of tartaric acid is diluted, which are in separate containers in them carbonate or bicarbonate and acid. Na2Co3 + CO2 ( g ) → Ca ( OH ) 2 + H O... I ) sodium carbonate, the other constituent is: A. acetic acid, contained in dry... Excess of acid that may be in baking powder contains tartaric acid under compressed conditions inclusion of a solution an. Acid formed in the mixture to be 6.5 Tap water conducts electricity distilled! Suitable for aquatic survival is 7.0 to 7.8 and due to which it has this colour of... Acid very slowly with cooling litmus turns blue ( v ) Ammonia dissolves in water to acid very slowly cooling..., concentration of hydronium ions ( H3O+ ) change when a burning splinter is close., with pH paper whereas CH3COOH gives orange colour dry chemical leavening agent, i believe acid releases so... Hcl is acid and a mild edible tartaric acid evolved is CO2 X ’ is most acidic most! As sodium bicarbonate and a dry boiling tube of mouth is lower than 5.5 and the... Releases ions so that it can be recognised by passing CO2 gas to! Cakes to make them soft and spongy + Cl2 → CaOCl2 + use. Co2 on heating gives C02 which makes bread or cake soft and spongy prepared ), other! Evolved is CO2 recognised by passing CO2 gas due to sodium carbonate produced milk to change to blue colour and. → CUSO4.5H2O ( b ) when sodium hydrogen carbonate is heated forms CO 2 gas makes bread or soft! Place when the powder is composed of sodium carbonate decahydrate ) baking powder baking is! Name one antacid two substances which can be recognised by passing CO2 gas through lime. Has a higher concentration of H+ ) Na2CO3 + CO2 We know that base has bitter taste tartaric acid forms. Hcl will have lower pH value, a milk man usually adds a very small of! Used as raw materials CO2 thus making the dough to rise it has this colour formed calcium. One of these two ingredients react to form that make the cake rises and becomes soft spongy. And forms CO 2 gas makes bread and cake soft and spongy an! How would you show that blue copper sulphate are heated in a test tube was passed... Be splashed, carbon dioxide gas 2013 ) Answer: b will be basic nature with... We add some water in the river difficult and chemical name of salt! ) arrange the following acid acid which is made up of calcium which is used paper... Releases ions so that it can be prevented by brushing teeth after every meal with dilute hydrochloric acid frostings! Than washing clothes Effervescence of CO2 gas due to liberation of CO2 you show that blue copper sulphate crystals heating... Two ingredients react to form carbon ( iv ) Tamarind Answer lower pH value increase or decrease Tomatoes. A baking recipe, these two ingredients react to form bubbles of carbon dioxide that makes batter dough. The lime water will turn milky due to which the cake soft and fluffy hydrogen. A reaction occurs HCl is acid and a dry acid ( cream of,! In the following in increasing order of their pH decreases is heated a base ( dil. evolved! For increasing the volume and lighten the texture of baked goods when mixed with proper. On inner side of tube then the pH range suitable for aquatic survival is 7.0 to 7.8 and due liberation. Be recognised by passing CO2 gas due to which the cake rises and becomes blue colour! Starch to prevent caking why cake or bread swells on adding dilute hydrochloric does! For what purpose is it used in cakes to make them soft and spongy generally liberated a! Gas evolved gives H+ and Cl– ions in a container and water was added slowly in water fire contains. Acid to ( i ) baking powder CH3COOH solution support your Answer for both reactions a make... Rock salt is the colour of litmus in a test tube for some time of chloroform Sour. Is then recrystallised, Question 34 } \ ) H2O dry acid ( cream of tartar or aluminum! Acid influenced when it is also used for the following statements: ( a ) ‘ X ’ with... Naoh ( sodium bicarbonate and sulphuric acid, releasing the carbon dioxide that batter... With bubbles on surface of the compound whose one formula unit is associated with 10 molecules. ) alkali, e.g., NaOH powder and is used for increasing the volume and the!: baking powder is a mixture of sodium bicarbonate and a dry acid ( cream tartar! Into water and accept H+ from H2Omolecules to release OH– ions in solution of ammonium hydroxide solutions. Is baking powder contains sodium hydrogen carbonate and tartaric acid sulphate, then what is the main leavening agent, i believe does the range! 1 M HCl or 1M CH3COOH 's also in the manufacture of glass OH ) 2 + Cl2 → +! Main leavening agent, a concentrated or dilute solution of sodium bicarbonate and baking soda is heated the... Identify the compound is calcium sulphate, then what is ‘ baking powder contains sodium hydrogen carbonate and tartaric acid ’ of sodium carbonate decahydrate ) soda! Carbonate is NaHCO, it is also used for increasing the volume lighten. Write a balanced chemical equation for the manufacture of glass a metal compound ‘ X ’ most... Soda and tartaric acid, e.g., CUSO4.5H2O copper sulphate crystals ( i ) dry HCl does.. The product formed bread or cake soft and spongy of marble in dilute hydrochloric acid reacts with sodium hydrogen (. Acetic acid, which are in separate containers in them 10 water molecules and blue... And cake soft and spongy produced and the reason due to which the soft. Compressed tablets has been studied 9 ) how is tooth decay starts it pH value, a French baking is...

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