Why conc. sulphuric acid is not used to dry hydrogen?

Open in App

Solution

These are the following reasons
1. Conc. H₂SO₄ on absorbing water from moisture produces so much heat that $H_{2}$ catches fire. Therefore, it is not used for drying hydrogen.
2. Conc. sulphuric acid is not used to dry hydrogen because it reacts with hydrogen and forms sulphur dioxide gas.
$\underset{Sulphuric acid}{H_{2} {SO}_{4}} + H_{2} \to 2 H_{2} O + \underset{Sulphur dioxide}{{SO}_{2} (↑)}$

Suggest Corrections

Similar questions

Why is hot concentrated Sulphuric acid not used in the preparation of Hydrogen ?

Why is :

(a) concentrated sulphuric acid kept in air tight bottles ?

(b) $H_{2} S O_{4}$ is not used as a drying agent for $H_{2} S$ ?

Hydrogen may be prepared in the laboratory by the action of a metal on an acid.

(a) Which of the metals copper, zinc , magnesium or sodium would be the most suitable ?

(b) Which of the acids dilute sulphuric, concentrated sulphuric, dilute nitric acid and concentrated nitric would you choose ? Explain why you would not use the acids you reject.

Q. Why is Concentrated Sulphuric acid not used as a drying agent to dry Hydrogen gas?

(1.) Explain why nitric acid is not used to dry hydrogen?

(2.) When hydrogen is burnt,why droplets of colourless liquid condense?

(3.) Explain why concentrated sulphuric acid is not used to dry hydrogen?

Join BYJU'S Learning Program