$\mathop {[Co\,{{(N{H_3})}_5}B{r_2}]S{O_4}}\limits_{0.02\,{\text{mole}}} + BaC{l_2} \to $$\mathop {[Co\,{{(N{H_3})}_5}Br]\,C{l_2}}\limits_{0.02\,{\text{mole}}\,(z)} + BaS{O_4}$
On using one lit. solution, we will get $ 0.01$ $mole$ $y $ and $0.01$ $mole$ $z.$
$5 {Fe}^{2+}+{MnO}_{4}^{-}+8 {H}^{+} \rightarrow {Mn}^{2+}+4 {H}_{2} {O}+5 {Fe}^{3+}$
Column $-I\,-$ Column $-II\,-$ Column $\,-III$