In acidic medium, the number of moles of KMnO4 required to oxidise 1 mole of Fe2+ to Fe3+ is
In acidic medium, the number of moles of KMnO4 required to oxidise 1 mole of Fe2+ to Fe3+ is
A. 0.2
B. 0.5
C. 2.5
D. 5
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Answer: A. 0.2
\(\mathrm{MnO_4^-+5Fe^{2+}+8H^+\rightarrow Mn^{2+}+5Fe^{3+}+4H_2O}\); 1 mol Fe2+ needs \(\frac15\) mol MnO4−.
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· 23 Oct 2026
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