Question

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

Answer 1

Answer:

If the reaction is slow then we can add a little copper sulphate solution to accelerate the reaction. The apparatus should be made air tight. Concentrated sulphuric acid should not be used because it produces sulphur dioxide instead of hydrogen gas.

Answer 2

Answer:

Hope it helps

Explanation:

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