Complete the following equation. mg+CuSO4  ii. __________+ FeSO4 CaSO4 + Fe

Dear Student,
For the first reaction,
We know that Mg (magnesium) is more reactive than Cu (copper) in the reactivity series.
Hence Mg will displace Cu from its salt solution
$M{g}_{\left(s\right)} + CuS{O}_{4\left(aq\right)}\underset{ }{\to } MgS{O}_{4\left(aq\right)} + C{u}_{\left(s\right)}$

For the second reaction,
$C{a}_{\left(s\right)} + FeS{O}_{4\left(aq\right)} \underset{}{\to } CaS{O}_{4\left(aq\right)} + F{e}_{\left(s\right)}$
Since Calcium (ca) is more reactive than iron (Fe) in the reactivity series,
Ca displaces Fe from its salt solution.

Regards