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14.A gas X reacts with lime water and forms a compound Y which is used as a bleaching agent inchemical industry. Identify X and Y. Give the chemical equation of the reaction involved(a)INCERT Exemplar)15.A solution has a pH of 7 (seven). Explain how you would() increase its pH(ii) decrease its pH(b) What can you say about the pH of a solution that liberate CO2 from sodium carbonate? Writethe balanced chemical equation for the reaction. |
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Answer» Chlorine gas reacts with lime water to form calcium oxychloride that is bleaching powder. The chemical reaction is as follows -2Ca(OH)2 + 2Cl2 → Ca(OCl)2 + CaCl2 + 2H2O Increasw its ph by adding NaoHDecrease its pH by adding acid like H2SO4 or HCl The pH of solution which liberate CO2 from Na2CO3 should be less than 7 as acid can do this.The Balanced chemical equation is:Na2CO3 + 2HCl ----->2NaCl+ H2O+CO2As salt and water is formed hence it is neautrilization reaction |
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