Complete the following reactions-

i. Cu + Al₂(SO4)₃ ⇒

ii. Cu + CuSO₄ ⇒

iii. Zn + FeSO₄⇒

i. Cu + Al₂(SO4)₃ ⇒ No change observed
Explanation: Because copper (Cu) is less reactive than aluminium (Al), it cannot displace Al from its salt solution. Hence, no change observed.

ii. Cu + CuSO₄ ⇒ No change observed
Explanation: A metal cannot displace itself from its salt solution. Hence, no change is observed.

iii. Zn + FeSO₄⇒ Because Zn is more reactive than Iron (Fe), hence Zn displaces Fe from its salt solution. The original pale green solution FeSO₄ becomes colourless.