MCQ
Acidified potassium permanganate solution is decolourised by
- ABleaching powder
- BWhite vitriol
- ✓Mohr's salt
- DMicrocosmic salt
✓
Answer
Correct option: C.
Mohr's salt
c
(c)Mohr’s salt.
(c)Mohr’s salt.
$2KMn{O_4} + 8{H_2}S{O_4} + 10FeS{O_4}\, \to $
${K_2}S{O_4} + 2MnS{O_4} + 5F{e_2}{(S{O_4})_3} + 8{H_2}O$
Mohr’s salt decolourises $KMn{O_4}$ by reducing $M{n^{ + 7}}$ ions to $M{n^{ + 2}}$ ions.
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