MCQ
Mohr's salt is
- A$FeS{O_4}.7{H_2}O$
- B$Fe(N{H_4})S{O_4}.6{H_2}O$
- ✓${(N{H_4})_2}S{O_4}.FeS{O_4}.6{H_2}O$
- D$[Fe{(N{H_4})_2}]\,{(S{O_4})_2}.6{H_2}O$
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$Z{n^{2 + }} + 2e \to Zn,{E^o} = - 0.762\,V$
$M{g^{2 + }} + 2e \to Mg,{E^o} = - 2.37\,V$
When zinc dust is added to the solution of $MgC{l_2}$
