Question

Write three equations to show that hydrochloric acid acts as an acid.

Answer 1

Disclaimer: Any of the below mentioned reactions can be used to answer the given question.

Reaction of HCl as an acid:

With metals	Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)
With bases	NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
With carbonates	CaCO3(s) + 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g)
With bicarbonates	NaHCO3(s) + HCl(aq) → NaCl(aq) + H2O(l) + CO2(g)
With sulphites	Na2SO3(aq) + 2HCl(aq) → 2NaCl(aq) + H2O(l) + SO2(g)
With bisulphites	NaHSO3(s) + HCl(aq) → NaCl(aq) + H2O(l) + SO2(g)
With sulphides	ZnS(s) + 2HCl(aq) → ZnCl2(aq) + H2S(g)
With thiosulphates	Na2S2O3(aq) + 2HCl(aq) → 2NaCl(aq) + H2O(l) + SO2(g) + S(s)