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20 ml of 0.02 M KMnO4 was required to completely oxidise 10 ml of oxalic acid solution.

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20 ml of 0.02 M KMnO4 was required to completely oxidise 10 ml of oxalic acid solution. What is the molarity of the oxalic acid solution ?

(A) 0.1 M 

(B) 0.4 M 

(C) 1.0 M 

(D) 4.0 M

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1 Answer

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Best answer

Correct Option (A) 0.1 M 

Explanation: 

The concerned reaction is 2KMnO4 + 3H2SO4 + 5(COOH)2 → K2SO4 + 2MnSO4 + 10CO2 + 8H2O
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