is titrated with ferrous ammonium sulphate hexahydrate in presence of dilute . Number of water molecules produced for 2 molecules of is ________. [2023]

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Solution

Q.
${KMnO}_{4}$ is titrated with ferrous ammonium sulphate hexahydrate in presence of dilute $H_{2} {SO}_{4}$ . Number of water molecules produced for 2 molecules of ${KMnO}_{4}$ is ________. [2023]

Ans.
(68)

$\begin{matrix} 10 {FeSO}_{4} \cdot {({NH}_{4})}_{2} {SO}_{4} \cdot 6 H_{2} O + 2 {KMnO}_{4} + 8 H_{2} {SO}_{4} \\ ↓ \\ 5 {Fe}_{2} {({SO}_{4})}_{3} + 2 {MnSO}_{4} + 10 {({NH}_{4})}_{2} {SO}_{4} + K_{2} {SO}_{4} + 68 H_{2} O \end{matrix}$

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