Question

what happens when a copper vessel is exposed to moist air for
long time

Answer 1

Answer: Copper metal when exposed to air turns green in colour due to corrosion. When copper vessel is exposed to air in rainy season, the metal reacts with gases and moisture and atmospheric gases to form a mixture of copper carbonate and copper hydroxide. This gives a green colour to the surface of copper metal

Answer 2

if the copper is exposed in the moist air the it becomes corrosion and a greenish layer come