Question

why conc. sulphuric acid is used instead of dilute sulphuric acid in preparation of HNO3 and HCL.

Answer 1

Answer:

Concentrated sulphuric acid has a high boiling point (356°C). So, it is considered to be non-volatile. Hence, it is used for preparing volatile acids like Hydrochloric acid and Nitric acids from their salts by double decomposition

Answer 2

Answer:

Mark as a brilliant please

Explanation:

Concentrated sulphuric acid has a high boiling point (356°C). So, it is considered to be non-volatile. Hence, it is used for preparing volatile acids like Hydrochloric acid and Nitric acids from their salts by double decomposition.

NaCl + H2SO4 → NaHSO4 + HCl

NaNO3 + H2SO4 → NaHSO4 + HNO3