Question

5. The role of Mn' ion during oxidation-reduction titration of KMnO, by oxalic acid is
a. catalyst
b. reductant
c. oxidant
d reactant
Short answer questions​

Answer 1

Answer:

c Oxidant

because during the reaction Mn itself get reduced abd behave as oxidizing agent

Answer 2

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11th

Chemistry

Redox Reactions

Oxidation Number

When KMnO4 is reduced with ...

CHEMISTRY

Asked on November 22, 2019 byFarhaz Shaw

MEDIUM

When KMnO4 is reduced with oxalic acid in acidic solution , the oxidation number of Mn changes from:

A

+2 to +7

B

+4 to +7

C

+7 to +2

D

+6 to +2

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ANSWER

Reaction involved:

KMnO4+H2C2O4+H2SO4→K2SO4+MnSO4+CO2+H2O

Assign the oxidation number to Mn

Let the oxidation number of Mn be 'x'.

Oxidation number of SO42−=O=−2,K=+1.

In KMnO4: 1+x+4×(−2)=0

x+1−8=0 or x=+7

In MnSO4: x+(−2)=0