Question

12. Put Igm copper powder in a china dish and heat it up. What you observe?
a. Copper powder is converted into black coloured copper oxide
b. Copper powder is converted into yellow coloured copper oxide
c. Copper powder is converted into blue coloured copper oxide
d. Copper powder is converted into red coloured copper oxide​

Answer 1

Answer:

CuO + H₂ → Cu +H₂O

When copper powder is heated in a china dish, in the presence of oxygen, a black residue is formed on the dish due to the formation of copper(II) oxide. This phenomenon is known as surface

Answer 2

Answer:

a) copper powder is converted to back coloured copper oxide