Question

6: When sulphuric acid is poured over zinc, which of the
following gas is formed?

Answer 1

Answer:

H2

Explanation:

Zn + dil. H2SO4 → ZnSO4 + H2↑

Answer 2

$\huge\rm{\bigstar\underline{Answer :-}}$

When sulphuric acid($H_2SO_4$) reacts with zinc(Zn) the following reaction takes place :-

$H_2SO_4 + Zn ----) ZnSO_4 + H_2$

Hence, based on your question, when sulphuric acid is poured over zinc, the above reaction takes place and it leads to the formation of $H_2$ gas. The other product formed is zinc sulphate ($ZnSO_4$).

● Concept behind the reaction :-

This is a simple displacement reaction. Zinc metal is more reactive than hydrogen. Hence, it displaces hydrogen from dilute acids to form zinc sulphate along with the evolution of hydrogen gas.