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Question

The number of moles of $$KMnO_4$$ that will be needed to react completely with one mole of ferrous oxalate in acidic medium is:


A
25
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B
35
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C
45
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D
1
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Solution

The correct option is C $$\dfrac {3}{5}$$
The balanced chemical reaction is as shown below:

$$3MnO_4^-+5FeC_2O_4+24H^+\rightarrow 3Mn^{2+}+5Fe^{3+}+10CO_2+12H_2O$$

$$3$$ moles of $$KMnO_4$$ react with $$5$$ moles of $$FeC_2O_4$$.

Hence, the number of moles of $$KMnO_4$$ that will be needed to react completely with one mole of ferrous oxalate in acidic medium is $$\dfrac {3}{5}$$.

Hence, the correct option is $$B$$

Chemistry

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