Question

16. If copper is kept open in air, it slowly loses its shining brown surface
and gains a green coating. It is due to the formation of
(a) Cuso
(b) Cuco
(c) Cu(NO3)2
(d) Cuo
​

Answer 1

Answer:

cuco.......................

Answer 2

Explanation:

ANSWER

The green coat is due to the basic copper carbonate formation and is a mixture of copper carbonate and copper hydroxide (CuCO

3

and Cu(OH)

2

).