Consider the following reaction:
\(\mathrm{xMnO}_4^{-}+\mathrm{yC}_2 \mathrm{O}_4^{2-}+16 \mathrm{H}^{+} \longrightarrow \mathrm{xMn}{ }^{2+}+2 \mathrm{yCO}_2+\frac{\mathrm{z}}{2} \mathrm{H}_2 \mathrm{O}\)
The values of x, y, z in the reaction are respectively:
1
2, 5 and 16
2
5, 2 and 8
3
5, 2 and 16
4
2, 5 and 8