Question

what is the use of copper sulphate solution in the laboratory preparation of hydrogen gas?​

Answer 1

Answer:

Then hydrogen gas gets collected in the gas jar by downward displacement of water. If the reaction is slow then we can add a little copper sulphate solution to accelerate the reaction.

Answer 2

Explanation:

The laboratory preparation of hydrogen gas usually involves the action of dilute sulphuric acid or dilute hydrochloric acid on zinc granules. Granulated zinc is ideal for the preparation of hydrogen gas in chemical laboratories because it usually contains a small amount of copper, which has the ability to act as a catalyst to the associated chemical reaction and, therefore, increase the rate of the chemical reaction without actually participating in it.