Question

12. Dilute hydrochloric acid reacts with a metal carbonate to evolved a gas 'A'. When the gas is passed through sodium hydroxide solution a salt 'B' is formed . Identify 'A' and 'B'. What is the name of the reaction between 'A' and sodium hydroxide ? Write the hydrolysis reaction of salt 'B' and predict the pH range of the salt solution. ​

Answer 1

Answer:-

Carbon dioxide gas is liberated when hydrochloric acid reacts with sodium hydrogen carbonate. The gas liberated thus will pas through lime water and lime water turns milky due to the presence of carbon dioxide and further more if we do the same the solution becomes clear.

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contents are warmed a gas evolves which is bubbled through a soap solution before testing. Write the equation of the chemical reaction involved and the test to detect the gas. Name the gas which will be evolved when the same metal reacts with dilute solution of a strong acid?

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The pH of a salt used to make tasty and crispy pakoras is 14. Identify the salt and write a chemical equation for its formation.

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