Question

Blue colour of copper sulphate solution change when iron nail due to formation of ___

Answer 1

Answer:

ferrous sulphate I.e.FeSO4

Explanation:

iron is more reactive then copper and displaces it from copper sulphate solution..there is formation of ferrous sulphate after this single displacement reaction..colour of ferrous sulphate is green and thus colour changes from blue to green.

CuSO4+Fe---- FeSO4+Cu