48. Identify the compound X on the basis of the reactions given below. Also, write the name and chemical formulae of A, B and C.
Compound X + Zn → A + H₂(g)
Compound X + HCl → B + H₂O
Compound X + CH₃COOH → C + H₂O
Steps: NaOH reacts with active metals like Zn in hot concentrated alkali to give zincate and H₂: \(\mathrm{Zn + 2NaOH \xrightarrow{\Delta} Na_2ZnO_2 + H_2}\). Reaction with HCl gives salt and water (NaCl + H₂O). Reaction with acetic acid gives sodium acetate and water.