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Molecular mass of KMnO (4) is...

Molecular mass of `KMnO _(4)` is

A

158

B

294

C

198

D

134

Text Solution

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The correct Answer is:
A
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STATEMENT-1: The equivalent mass of of KMnO_(4) in acidic medium is (M)/(5) where M=molecular mass of KMnO_(4) STATEMENT-2: Equivalent mass is equal to product of molecular mass and change in oxidation number.

STATEMENT-1 KMnO_(4) overset("acidic medium")to Mn^(2+) , n factor of KMnO_(4) is 5 and STATEMENT-2 Equivalent mass of KMnO_(4) in acidic medium is (M)/(5) (M=molecular mass of KMnO_(4) )

Calculate the molecular masses of KMnO_(4) Given atomic masses C=12.0u, H=1.0u O=16.0u, K=39.0u, Mn=55.0u Fe=56.0u, N=14.0u

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Molecular weight of KMnO_(4) in acidic medium and neutral medium will be respecitvely -

Equivalent weight of KmNO_(4) when it is convert into MnSO_(4) is Where M = molar mass of KMnO_(4) .

When KMnO_(4) is titrated against FeSO_(4).(NH_(4))_(2)SO_(4).6H_(2)O in acidic medium the equivalent mass of KMnO_(4) is -