JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
\(KMnO _4\) 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 \(..........\).
- A \(67\)
- B \(65\)
- C \(68\)
- D \(66\)
Answer & Solution
Correct Answer
(C) \(68\)
Step-by-step Solution
Detailed explanation
By balancing the redox reaction we get \(10\left[ FeSO _4 \cdot\left( NH _4\right)_2 SO _4 \cdot 6 H _2 O \right]+2 KMnO _4+8 H _2 SO _4\) \(\downarrow\) \(5 Fe _2\left( SO _4\right)_3+2 MnSO _4+10\left( NH _4\right)_2 SO _4+ K _2 SO _4+68 H _2 O\)
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