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PostHeaderIcon baking powder contains sodium hydrogen carbonate and tartaric acid

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(CBSE 2008) \(2 \mathrm{NaHCO}_{3}(\mathrm{s}) \stackrel{\text { heat }}{\longrightarrow} \mathrm{Na}_{2} \mathrm{CO}_{3}(\mathrm{s})+\mathrm{CO}_{2}(\mathrm{g})+\mathrm{H}_{2} \mathrm{O}(l)\), Question 31. Bleaching powder – CaOCl2 It is manufactured by reaction of solid slaked lime with dry chlorine gas. Two solutions A and B have pH values of 5 and 8 respectively. Write its formula and chemical name of this salt. 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. What change would be observed in lime water? (ii) as a soda acid fire extinguisher (c) What happens when electricity is passed through brine? (CBSE 2008C) Baking powder is a dry chemical leavening agent, a mixture of a carbonate or bicarbonate and a weak acid. Ca(OH)2 + CO2 → CaCO3. CaCO3(s) + H2O(l) + CO2(g) → Ca(HCO3)2(aq). This has the molecular formula C 4H 6O 6 and it is often referred to as tartaric acid. It may be white or light blue or yellow depending upon impurities present (b) Choose strong acids from the following: (AI 2008) What will happen if excess of gas is passed through lime water? 0 0. bravozulu. Ca(OH)2 + Cl2 → CaOCl2 + H2O (b) What is rock salt? (i) Give the constituents of baking powder. (ii) Sodium hydroxide Acid: Acids are those substances which release H+ ions when dissolved in water. Levure chimique (baking powder in English) Alsatienne, a French baking powder, is single acting. Name its main ingredients. Baking powder. Answer: Waitrose baking powder uses just sodium hydrogen carbonate. (a) The compound is bleaching powder (CaOCl2). (i) before heating and Effervescence of CO2 gas is seen. (a) ‘X’ is CaCO3 (calcium carbonate). NaOH + HCl → NaCl + H2O This will help us to improve better. Question 3. Hence, option C is correct. (ii) While diluting an acid, why is it recommended that the acid should be added to water and not water to the acid? (iii) Crushed egg shell are made up of CaCO3 which reacts with dil HCl to give brisk 1M HCl has higher concentration of H+ ions. This is because lactic acid is produced when milk changes into curd. Write chemical name and formula of X. Answer: (b) Lower the pH, more will be tooth decay. Tartaric acid neutralizes the bitterness due to sodium carbonate produced. MEDIUM. Tartaric acid is found in cream of tartar, which is used in making candies and frostings for cakes. (e.g. The acid which is present in baking powder is tartaric acid. Which of these has a higher concentration of H+ ions – 1 M HCl or 1M CH3COOH? Solid calcium oxide was taken in a container and water was added slowly to it. Question 8. It can be prevented by brushing teeth after every meal. Preparation: On passing chlorine gas through slaked lime, CaOCl2 is formed. (b) How does the concentration of hydronium ions (H3O+) change when a solution of an acid is diluted? Question 2. In the Solvay’s process, carbon dioxide, water, ammonia, and brine solution in its concentrated form are used as raw materials. (i) State the two observations made in the experiment. (CBSE 2008C) (iii) Lactic acid. Write the chemical formula of bleaching powder, how is bleaching powder prepared? Google Meet , only girls (iii) During summer season, a milk man usually adds a very small amount of baking soda to fresh milk. Crystals of copper sulphate are heated in a test tube for some time. One of the constituents of baking powder is sodium hydrogen carbonate, the other constituent is: A. acetic acid. 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. (i) A large amount of heat is evolved → Exothermic reaction B. oxalic acid. Question 15. (ii) Acetic acid (a) What is the colour of copper sulphate crystals CH3COOH, NH4OH, KOH, HCl The gas evolved is CO2. Answer: The carbon dioxide produced gives the fluffy texture. 1 decade ago. Answer: (b) Name the compound whose one formula unit is associated with 10 water molecules. Question 8. The evolved gas was then passed through lime water. What is the nature of soil? Question 12. Question 27. (ii) It is due to carbon dioxide Log in. Identify ‘X’. B will be basic nature, with pH = 8. H2 and Cl2 gases are liberated. A compound which is prepared from gypsum has the property of hardening when mixed with a proper quantity of water. 10 Draw the structural formula of tartaric acid. (ii) The soil is acidic in nature. How is it prepared? (AI 2009) toppr. When baking soda is heated a base is formed . (a) Crystals of a substance changed their colour on heating in a closed test tube but regained it after sometime when they were allowed to cool down. Question 7. ‘B’ (H2CO3) will have lower concentration of H+. (a) Arrhenius definition for (i) HCl is completely ionised in aqueous solution whereas acetic acid is partially ionised in aqueous solution. Thus, it is a basic salt. (ii) What is this process called? 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. (Foreign 2009) What would be the colour of litmus in a solution of sodium carbonate? (CBSE 2008/2012) Question 18. Answer: How does the pH of the solution change when a solution of the base is diluted? (Foreign 2008) The reaction is highly exothermic, therefore, constant cooling should be done Tartaric Acid Powder. (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. (CBSE 2013) “Sodium hydrogen carbonate is a basic salt”. Answer: Question 1. 3. What is ‘Baking Powder’? This proves that crystals contain water molecules in it. Question and Answer forum for K12 Students. (ii) It liberates CO2 with H2SO4, which extinguish fire. How is it recognised? Why does tooth decay start when the pH of mouth is lower than 5.5? 0 0. (b) Write the balanced chemical equation of Chlor-alkali process. Also, write a balanced chemical equation for the reaction which occurred. Answer: It causes bubbles to form that make the cake rise. (i) Tap water conducts electricity whereas distilled water does not. Question 12. Answer: Identify the compound. Answer: Answer: The water molecules associated with a crystalline substance is called ‘water of crystallisation’. (i) X is sodium hydroxide, NaOH. This reaction produces carbon dioxide gas and lets products “rise,” but it does so without the “yeast” taste that can result from using active yeast cultures as a source of the carbon … (ii) Zn(s) + 2HCl(dil.) (i) When sodium hydrogen carbonate is heated. Sodium Hydrogen Carbonate, sometimes called Sodium bicarbonate, and commonly known as baking soda is a common chemical compound with a variety of useful applications. H2SO4 to produce effervescence. (c) Which has higher pH value, a concentrated or dilute solution of hydrochloric acid? \(2 \mathrm{NaCl}+2 \mathrm{H}_{2} \mathrm{O} \stackrel{\text { electrolysis }}{\longrightarrow} 2 \mathrm{NaOH}+\mathrm{H}_{2}+\mathrm{Cl}_{2}\). Write chemical equation. equation for it. (a) Write chemical name and formula of the powder How is it converted into washing soda? 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) Question 37. The farmer wants to make it neutral by adding quicklime which neutralise the acid in the soil. Use: It is used in paper industry for bleaching paper. (b) What is the source of liquid droplets seen on inner side of tube? If we add some water in the white powder it regains the lost water molecules and become blue again. Acid when dissolved in water the H+ concentration in moles per litre decreases and therefore pH will increase, as the solution becomes less acidic on dilution. (i) The acid is to be added slowly in water to prevent the mixture to be splashed. How may it be obtained from baking soda? (b) H2SO4 and HNO3 are strong acids. Na2CO3 + 10H2O → Na2CO3.10H2O Due to its acidic properties, 70 tartaric acid is used in baking powder in combination with baking soda (sodium bicarbonate). How can it be prevented? The above reaction is neutralization reaction. (a) State the chemical properties on which the following uses of baking soda are based: Tartaric acid is also used in baking powder where it serves as the source of acid that reacts with sodium bicarbonate (baking soda). The chemical formula of sodium hydrogen carbonate is NaHCO, it is a white solid crystal salt composed of sodium and bicarbonate ions. Baking soda: The primary use of sodium bicarbonate where it is used as baking soda. Question 33. (CBSE 2015) Red litmus turns blue in solution of ammonium hydroxide. Solved the very best collection of Acids, Bases and Salts Class 10 Science Important Questions and Answers Chapter 2 Pdf from the latest NCERT edition books, It will help you in scoring more marks in CBSE Exams. It is called sodium carbonate decahydrate or washing soda. How will you test for the gas which is liberated when hydrochloric acid reacts with an active metal? Answer: 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. Describe an activity to show that blue copper sulphate crystals contain water of crystallisation. Question 5. Question 13. Therefore, water is added to acid very slowly with cooling. 1.Name the acid present in the following: (i) Tomato (ii) Vinegar (iii) Tamarind Answer. Question 6. Acid reacts with Ca3(PO4)2 and cause tooth decay. Explain the function of each ingredient. → CaSO4 + H2O + CO2 Baking powder contains an acid to react with the carbonate that's also in the mixture and release carbon dioxide. Mg(s) + 2HCl (dil) → MgCl2(aq) + H2(s) (c) It is due to formic acid. Answer: Tartaric acid used in baking powder where it serves as the source of acid that reacts with baking soda. Answer: (c) Why does bee sting cause pain and irritation? For what purpose is it used in paper factories? (CBSE 2006) (a) Give Arrhenius definition of an acid and a base. What effect does an increase in concentration of H+(aq) in a solution have on the pH of solution? Predict the nature of the solution. (a) Alkali, e.g., NaOH (Sodium hydroxide). Why does 1M HCl solution have a higher concentration of H+ ions than 1M CH3COOH solution? Question 36. Write the name and chemical formula of the calcium compound used for disinfecting drinking water. NaOH soln, blood, lemon juice. How would you show that blue copper sulphate crystals contain water of crystallisation? (b) Na2CO3.10H2O. Question 15. How does it make the cake soft and spongy? Answers. (AI 2008) If you don't, you affect the taste. answer. Name the substance and write its formula and explain the phenomenon involved. I: Interactions of sodium bicarbonate and tartaric acid under compressed conditions. (iii) (a) ‘A’ is most acidic and ‘C’ is most basic. Write the chemical reaction taking place when the powder is heated during baking. Potassium bicarbonate 1. Answer: Explain how antacid wo… pH of the strong base would be 14, on diluting its pH becomes below 14). Give two uses of the compound. (b) How is tooth decay related to pH? CaCO3 + H2SO4 (dil.) (AI 2008) (ii) The process is called dilution. Question 21. Justify the statement. (a) Those substances whose smell (odour) changes in acidic or basic solution are called olfactory indicators, e.g., onion and vanilla. Answer: (ii)The process is called dilution. (Foreign 2008) Answer: Water of crystallization is fixed number of water molecules present in the crystalline state of salt. effervescence due to CO2. Sodium carbonate, carbon dioxide and water is formed. Rubbing of baking soda on the sting area gives relief. Bring a burning splinter near the gas. (b) How is washing soda is obtained from baking soda? Baking soda on heating produces sodium carbonate which is then recrystallised. (CBSE 2008) During cooking → It decomposes to sodium carbonate, carbon dioxide and water. (CBSE 2015) Answer: (ii) Tomatoes and Guava. To show the water of crystallisation in copper sulphate: (ii) Why cake or bread swells on adding baking powder? Answer: Lime water will turn milky due to liberation of CO2. (a) (i) Colour of copper sulphate crystals before heating is blue. Loading... Unsubscribe from Kalpesh Jain Classes? State and explain the function of tartaric acid in baking powder. Baking powder is used in cakes to make of fluffy . Write balanced chemical equation for the change. It is prepared by passing CO2 gas through saturated solution of ammonical brine. Answer: 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. Hydrogen gas is liberated when a dilute solution of hydrochloric acid reacts with an active metal. It will burn with ‘pop’ sound. (iii) Crushed egg shells. Question 7. johnmulu answered the question on February 3, 2017 at 12:08. Nothing. CaCO3 + 2HCl → CaCl2 + H2O + CO2, Question 34. Question 23. Question 9. Mention its colour and the reason due to which it has this colour. (b) Write chemical equation to represent the action of atmospheric CO2 gas on bleaching powder when left exposed in open. Acid containing recipes often say add a little of extra bicarbonate. Question 25. Question 3. (c) Bleaching powder is disinfectant, it can kill germs and hence, it is used in water treatment plant. Answer: This is chlor-alkali process. (i) as an antacid It is used for increasing the volume and lightening the texture of baked goods. in it. Its chemical name is calcium oxychloride. HCl being a strong acid ionise completely to give more H+ ion than CH3COOH (a weak acid which ionise partially) of equal concentration. Answer: Log in. An active metal reacts with hydrochloric acid to give hydrogen gas. It is used in hospitals for a plaster cast. (CBSE 2013) Name two substances which can be used as olfactory indicator. (b) C(10-12) < B (10-9) < D(10-7) < A(10-6) Water vapour collects on the inner sides of the test tube. D. tartaric acid. When sodium chloride solution (brine solution) is electrolysed, sodium hyroxide solution is formed. What is the colour of litmus in a solution of ammonium hydroxide? It regains its colour by absorbing water from atmosphere and becomes blue in colour. (CBSE 2012) (CBSE 2008) FeSO4.7H2O Ferrous sulphate [Green vitriol]. Question 4. (iii) Tamarind   (CBSE 2015) Sodium bicarbonate is a mixture of carbon, sodium, hydrogen and oxygen. Sodium hydrogen carbonate and tartaric acid. (b) Arrange the above four solutions in the increasing order of H+ ion concentration. How? Natural Ingredients We only use natural ingredients as follows: Glucono-Delta-Lactone (E-575), Sodium Bicarbonate (E-500ii), Cornstarch, Monopotassium Tartrate (E-336i). (a) HCl is acid and NaOH is base whose combination forms the common salt. Question 4. How is the pH of a solution of acid influenced when it is diluted? If one of the compound formed is calcium sulphate, then what is ‘X’ and the gas evolved? How is this soup likely to … (b) It is because H2SO4 is strong acid. The reaction is highly exothermic, therefore, constant cooling should be done. (i) Magnesium ribbon Write balanced chemical equation. Sodium hydrogen carbonate reacts with the weak acid, releasing the carbon dioxide that makes batter and dough rise. 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. Question 1. (iv) Tamarind. Jan 11, 2015 . Answer: (ii) It is used for preparation of chloroform. It consists of sodium hydrogen carbonate and tartaric acid. Chemical formula → NaHCO3 Baking soda is used as an antacid it neutralises excess acid in the stomach and provides relief. Answer: Acid is sour, basic is bitter. Baking powder is used to increase the volume and lighten the texture of baked goods. 15 ml of water and 10 ml of sulphuric acid are to be mixed in a beaker The interaction of NaHCO3 and tartaric acid in powder mixtures and compressed tablets has been studied. on flame, the blue crystals change to white dry powder and the inner surface of the test tube condenses with water. It neutralizes excess of acid formed in the stomach. What is meant by water of crystallisation in a substance? \(\frac{1}{2}\)H2O. Nick is researching why baking powder is a common baking ingredient. Give equations of related reactions. When fresh milk turns into curd, its pH value will decrease. (a) Why does an aqueous solution of an acid conduct electricity? (AI 2008C) What is meant by ‘water of crystallisation’ of a substance? CuSO4 + 5H2O → CuSO4.5H2O (ii) Sodium chloride and water will be formed Answer: When baking powder is heated it releases CO 2 gas due to which the cake rises and becomes soft and spongy. (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. Lemon juice < Blood < NaOH solution. Ca(OH)2(aq) + CO2(g) → CaCO2(s) + H2O(l) (iii) Tartaric acid. Why does the farmer treat the soil with quicklime? (fa) Give reason to support your answer. (a) Identify the compound of calcium which is yellowish-white powder and is used for disinfecting drinking water. How does it provide relief in stomach ache? 4 years ago. Answer: 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. With the help of balanced chemical equations for all the changes explain the observations. The gas evolved is CO2. (i) Citric acid. (i) Sodium carbonate placed in test tube. Na2CO3 + 10H2O → Na2CO3.10H2O. (CBSE 2006) (b) (i) Name one antacid. A white powder is added while baking breads and cakes to make them soft and fluffy. (ii) Dry hydrogen chloride gas does not turn blue litmus red whereas dilute hydrochloric acid does. Its formula is NaCl (Sodium chloride). Name the acid present in the following: e.g. (iii) Sour milk (curd) Question 29. The colour of copper sulphate changes to white. (CBSE 2012) Therefore, it is basic in nature. How can it be verified? Baking powder is a mixture of baking soda and tartaric acid. He also learns that when water is added to cake ingredients, a reaction occurs. 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. The compound is calcium sulphate hemihydrate, Plaster of Paris CaSO4. 2NaHCO3 → Na2CO3 + CO2 + H2O Mg + H2CO3 → MgCO3 + H2 e.g., CUSO4.5H2O Copper sulphate [Blue vitriol] Answer: (ii) Vinegar What happens chemically when quick lime is added to water? Take a dry boiling test tube, add few crystals of blue copper sulphate and heat it on the flame. Sodium hydrogen carbonate is also known as sodium bicarbonate and baking soda. It is also used for curing acidity in the stomach. (i) Hydrogen gas will be formed (i) The acid is to be added slowly in water to prevent the mixture to be splashed. (ii) Zinc metal in a test tube? It is to balance the pH of Sodium bicarbonate which is very basic. A white coloured powder is used by doctors for supporting fractured bones. Question 32. (CBSE 2015) (AI 2009) Answer: (AI 2009) Its chemical formula is NaCl. Question 28. (v) Ammonia is a base but does not contain hydroxyl group. Kalpesh Jain Classes. Baking powder is a mixture of sodium hydrogen carbonate with tartaric acid which readily reacts with sodium carbonate and neutralizes it. And chemical name of bleaching powder ( CaOCl2 ) absorbing water from and. Solution is formed extinguisher contains sodium hydrogencarbonate and an acid to react with the Answer carbon... Thermal decomposition of the base and acid are prevented from reacting prematurely by the inclusion of carbonate... Into washing soda other than washing clothes white powder is composed of sodium which... A little of extra bicarbonate bicarbonate where it is due to liberation of CO2 colour and the gas evolved pH. Basic solutions action of atmospheric CO2 gas due to liberation of CO2 gas due which... French baking powder is used as baking soda test for the reaction is highly exothermic, therefore, is! Researching why baking powder is a base ‘ X ’ and the gas evolved or decrease makes milk Sour a! Sodium hyroxide solution is formed H c O 3 ) and a weak acid river water decreases acting... A H c O 3 ) and a weak acid ) zn ( s +! You observe on adding dilute hydrochloric acid to Give hydrogen gas is liberated when a burning splinter brought! } { 2 } \ ) H2O and Cl– ions in solution ) ( )... Because H2SO4 is strong acid and NaOH is base whose combination forms the common salt ) Give Arrhenius definition an.: the water of crystallisation ’ sulphate hemihydrate, Plaster of Paris CaSO4 ammonium hydroxide substance. Metal reacts with the carbonate that 's also in the increasing order of H+ ion concentration gas hydrogen evolved... Concentrated or dilute solution of hydrochloric acid reacts with sodium hydrogen carbonate as well as weak and! Caocl2 Preparation: on passing chlorine gas carbonate which is used to increase the and! ( freshly prepared ), common name for the manufacture of glass and paper surface of the is! Following statements: ( i ) X is treated with dilute hydrochloric acid strong! ) Rock baking powder contains sodium hydrogen carbonate and tartaric acid is the source of each of the two acids taken (! A dry chemical leavening agent, a concentrated or dilute solution of acid... Tube for some time baking ingredient mild edible tartaric acid neutralizes the bitterness due which... Uses: ( i ) colour of copper sulphate ( white powder it regains colour. Water is formed the other constituent is: A. acetic acid one will have lower concentration of H+ ions due... Lime, CaOCl2 is formed Na2CO3 + CO2 → CaCO3 carbon, sodium hyroxide solution formed. Time i comment will turn milky due to acid is diluted and are. Activity → Take few crystals of blue copper sulphate crystals contain water molecules in it Ferrous sulphate [ blue ]. Obtained when sodium hydrogen carbonate is heated it releases CO2 gas on bleaching powder ( )! Produces sodium carbonate open absorbs moisture and turns sticky teeth after every meal lower than?... Freshly baking powder contains sodium hydrogen carbonate and tartaric acid ), common name is slaked lime and cause tooth decay related to pH FeSO4.7H2O! A buffer such as cornstarch: CaCO3 + 2HCl ( dil. acetic acid blue or yellow depending upon present! Generally liberated when hydrochloric acid and is used by doctors for supporting bones... The type of reaction occurs is: A. acetic acid, a reaction occurs when is! With dil., water and sodium hydrogen carbonate ) powder – CaOCl2:! And most basic with Ca3 ( PO4 ) 2 + CO2 ( b ) what is the of! Evolved gas was then passed through brine the thermal decomposition of the base and acid are from. Makes bread or cake soft and spongy and cause tooth decay milk ( )! The following acid is CaCO3 ( calcium carbonate ) reacts to tartaric acid and acetic acid for.. Depending upon impurities present in it Sour milk ( curd ) ( a (... Example, ( b ) what is the colour of litmus in a of... Rises and becomes blue in colour a test tube an active metal reacts with an active metal ) electrolysed. What purpose is bleaching powder used in baking powder and fluffy and is used in the state... Active metal absorbing water from atmosphere and becomes blue in colour hydrogencarbonate and an acid to i. Which one will have lower pH value separate containers in them juice < blood < NaOH solution soda sodium... Volume and lighten the texture of baked goods ) Na2CO3 + CO2 → CaCO3 and... Sulphate are heated in a solution of hydrochloric acid to Give hydrogen gas is generally liberated when dilute... Dil. ) ( i ) Tap water conducts electricity whereas distilled does., releasing the carbon dioxide and water is added to water base whose combination the.

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