Question

1g of copper powder was taken in a china dish and heated. What change takes place on heating? When hydrogen gas is passed over this heated substance, a visible change is seen in it. Give the chemical equations of the reactions, the name and the colour of the products formed in each case.

Answer 1

Answer:

1. oxidation of copper to copper oxide.
2. surface of copper power powder begins to coat with black copper oxide.
3. 2cu+o2---->2cuo