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Assertion . The reaction of oxalic acid ...

Assertion . The reaction of oxalic acid with acidified `KMnO_4` proceeds slowly in the beginning but speeds up after sometime.
Reason : `KMnO_2`, decomposes to give MnO, under the influence of sunlight. a)If both (A) and (R) are correct and (R) is the correct explanation of(A). b)If both (A) and (R) are correct, but(R) is not the correct explanation of (A). c)If(A) is correct, but (R) is incorrect. d)If both (A) and (R) are incorrect.

A

If both (A) and (R) are correct and (R) is the correct explanation of(A).

B

If both (A) and (R) are correct, but(R) is not the correct explanation of (A).

C

If(A) is correct, but (R) is incorrect.

D

If both (A) and (R) are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
B
It is due to auto-catalysis, `Mn_(2+)` formed being auto-catalyst.
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