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Q.

An equimolar mixture of Na2C2O4 and KHC2O4 · 3H2C2O4 required V1 litre of 0.1 M KMnO4 in acidic medium for complete oxidation. The same amount of mixture required V2 litre of 0.2 M NaOH for complete neutralization. What is the ratio of V1 : V2?

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a

4 : 7

b

10 : 7

c

8 : 7

d

2 : 7

answer is A.

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Detailed Solution

The ratio of V1 and V2 can be calculated as,

a×2+a×8=V1×0.1×5

a×7=V2×0.2×1⇒V120=2V270

So, V1:V2 =4:7.

So, correct option is A.

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