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Statement-1: Equivalent mass of KMnO(4) ...

Statement-1: Equivalent mass of `KMnO_(4)` is equal to one-third of its molecular mass when it acts as an oxidising agent in an alkaline medium.
Statement-2: Oxidation number of Mn is +7 in `KMnO_(4)`.

A

(1) Assertion is true, Reason is true, Reason is a correct explanation for Assertion

B

(2) Assertion is true, Reason is true, Reason is not a correct explanation for Assertion.

C

(3) Assertion is true, Reason is false

D

(4) Both assertion and Reason are false.

Text Solution

Verified by Experts

The correct Answer is:
B
In alkaline mcdium, `KMnO_(4)` is reduced to `MnO_(2)` which involves `3e^(-)`. Thus, its equivalent wt = `M//3`.
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(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 (A) is incorrect, but (R) is correct. ltbr. (e) if both (A) and (R) are incorrect. Q. Assertion (A): Equivalent mass of KMnO_(4) is equal to one-fifth of its molecular mass when it acts as oxidising agent in mild basic medium. Reason (R): Oxidation number of Mn in KMnO_(4) is +7 .

Calculate the oxidation number of Mn in KMnO_(4) molecule.

Molecular mass of KMnO _(4) is

STATEMENT-1: Equivalent mass of KMnO_(4) in different mediums are different STATEMENT-2 KMnO_(4) can act as a oxidising agent .