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What is the volume (in ml) of 0.1 M potasium permanganate solution required to completely oxidise 100 ml of 0.5 M ferrous sulphate solution in acidic medium?

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100

200

answer is D.

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Detailed Solution

M₁=0.1M

M₂=0.5M

V₁=?

V₂=100ml

Balanced eq is

10FeSO₄+2KMnO₄+8H₂SO₄=5Fe₂SO₄+2MnSO₄+K₂SO₄+8H₂O

Formula follows

n₂×M₁×V₁=n₁×M₂×V₂

10×0.1×V₁=2×0.5×100

V₁=100ml

Hence the correct answer is (D)100

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