Question

in laboratory preparation of hydrogen gas the reactant are aluminium and dilute sulphuric acid statement​

Answer 1

Answer:

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.

Answer 2

hadrogen gas is prepared in the laboratory by reacting dilute HCL with granulated zinc.

following reaction takes place

Zn+ 2HCL_ ZnCL2+H2