Which gas is usually liberated when an acid reacts with a metal ? How will you test for the presence of this gas ?

(a) Name the gas which is liberated when an acid reacts with a metal ? How will you test the presence of this gas ? (b) Write the chemical equation for the reaction of zinc metal with (i) Hydrochloric acid and (ii) With sodium hydroxide. Write the chemical name of salt obtained in each case. (c) Identify the acid and base for ammonium chloride salt. What would be the nature of this salt ? mention the pH range of this salt.

(i) Name the gas which is liberated when an acid reacts with a metal. How will you test the presence of the gas. (ii) Write the chemical equations for the reaction for zinc metal with : (a) Hydrogen acid and (b) Sodium hydroxide Write the chemical name of salt obtained in each case.

Which gas is produced when an acid reacts with a metal ?