Question

1g of copper powder was taken irt a China dish and heated. What change takes place on heating?
When hydrogen is passed over this heated substance, a visible change is seen in it. Give the
chemical equations of reactions.​

Answer 1

Answer - CuO + H2 -----> Cu + H2O

Explanation:

1.

we get copper oxide, black coating is formed

2.

when hydrogen is passed through it black colour changes into brown reverse reaction happens and we again get copper and water