Question

why does a copper vessel acquire green coating if it is exposed to moisture for a long time? write the reaction also .​

Answer 1

Answer:

Copper forms a green deposit on its surface when exposed to air which is usually a mixture of copper carbonate and copper hydroxide.

The chemical reaction is

2Cu + H2O + CO2 + O2 → Cu(OH)2 + CuCO3

Answer 2

Answer:

when copper is exposed to moisture the green coating comes over it which is copper oxide due to reaction between copper and water

the reaction is Cu + H20 --> CuO + H2