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CBSE Class 12 · d and f Block ElementsShort Answer

Complete the following equation:

2 Mn O_{4}^{-} + 6 H^{+} + 5 N O_{2}^{-} ⟶

Answer: 2MnO₄⁻+6H⁺+5NO₂⁻→2Mn²⁺+5NO₃⁻+3H₂O.

Solution

Acidified permanganate oxidises nitrite to nitrate:

2Mn O_{4}^{-} + 6 H^{+} + 5N O_{2}^{-} \to 2M n^{2 +} + 5N O_{3}^{-} + 3 H_{2} O

(Mn: +7 → +2; N: +3 → +5.)

CBSE Class 12 Board · Subjective

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