Question

a metal x acquires a black coating on its surface on exposure to air a) Identify the metal x b)Name the component of air that is responsible to form black colour coating over metal x c)Write a balanced chemical equation to represent the above reaction​

Answer 1

Explanation:

1. Metal X is copper and the oxide formed is copper oxide .. the process is known as corrosion.
2. the method responsible for this change is electroplating