Question

what happens when a copper material in humid air​

Answer 1

Answer:

When a copper vessel is exposed to moist air for long time acquires a dull green colour which is form due to the formation of basic carbonate due to its reaction with CO2 Present in the air. Explanation: ... Hence, the corroded coating of green color is copper carbonate which is basic in nature.

Answer 2

Answer:

it forms copper sulphate when exposed in humid air