Question

For preparing 5 litre n/10 permagnet solution how much KMnO4 is required??​

Answer 1

One liter 1N solution of KMnO

4

corresponds to 1 g equivalent. In acid medium for oxidation, the equivalent weight of KMnO

4

is one fifth of its molecular mass. It is

5

158

=31.6.

Hence, 1 g equivalent of KMnO

4

corresponds to 31.6 g.

Hence, in order to prepare one liter 1N solution of KMnO

4

, 31.6 grams of KMnO

4

are required, if the solution to be used in acid medium for oxidation.

Answer 2

Explanation:

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