Identify the compound X on the basis of the reactions given below. Also, write the name and chemical formulae of A, B and C.

The compound X has to be Sodium hydroxide as when zinc reacts with sodium hydroxide, then only hydrogen gas is liberated. Also, sodium hydroxide reacts with hydrochloric acid to give water. Also, sodium hydroxide reacts with acetic acid to form sodium acetate and water. The reactions are as follows:




13