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.


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