Question

What happens when copper vessels are left in air for a long time ? Name the compound formed.

Answer 1

we will left copper react with oxygen and copper oxide

Answer 2

Answer: The compound formed is copper carbonate.

Explanation:

When copper vessels are left in air for a long period of time it turns into green color due to corrosion. It results in the formation of copper oxide which later on reacts with carbon dioxide in the atmosphere and results in the formation of copper carbonate which is green in color.

The reaction is as follows.

               $2 Cu + O_{2} \rightarrow 2CuO$

               $CuO + CO_{2} \rightarrow CuCO_{3}$

Hence, the compound formed is copper carbonate.