Consider the following equations: 2 Fe^2++ H_2 O_2 → x A +y B (in basic medium) 2 MnO_4^-+6 H^++5 H_2 O_2 → x^′ C +y^′ D +z^′ E (in acidic medium)…

Consider the following equations : $$2 \mathrm{Fe}^{2+}+\mathrm{H}_2 \mathrm{O}_2 \rightarrow x \mathrm{~A}+y \mathrm{~B} $$ (in basic medium) $$2 \mathrm{MnO}_4^{-}+6 \mathrm{H}^{+}+5 \mathrm{H}_2 \mathrm{O}_2 \rightarrow x^{\prime} \mathrm{C}+y^{\prime} \mathrm{D}+z^{\prime} \mathrm{E} $$ (in acidic medium) The sum of the stoichiometric coefficients $\displaystyle x, y, x^{\prime}, y^{\prime}$ and $\displaystyle z^{\prime}$ for products A, B, C, D and E , respectively, is \_\_\_\_.