Question

Why does a green layer form on the surface of copper ?

Answer 1

hey....dear....here is ur answer.........

bcoz it gets oxidized with our atmosphereic gases......

copper particles get coated with green color which is due to the formation of basic copper carbonate.....


Hope it HeLps u....

Answer 2

Hello there.

it is due to oxidation. The copper reacts with the oxygen present in open environment, and produce copper oxide. The green layer on copper surface is copper oxide.

The reaction is given by:

2Cu + O2 = 2 CuO.


Hope it helps you.