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ChemistryComplete d-blockd-blockMedium2 minPYQ_2022
ChemistryMediummatching list

The dark purple colour ofKMnO4disappears in the titration with oxalic acid in acidic medium. The overall change in the oxidation number of manganese in the reaction is

Options:

Answer:
A
Solution:

The overall reaction takes place in the process is

2KMnO4+3H2SO4+5COOH2K2SO4+2MnSO4+8H2O+10CO2

Potassium permanganate is a strong oxidising agent and in the presence of sulfuric acid it acts as a powerful oxidising agent. In acidic medium the oxidising ability of KMnO4 is represented by the following equation.

MnO4-+8H++5e-Mn2++4H2O

Stream:JEESubject:ChemistryTopic:Complete d-blockSubtopic:d-block
2mℹ️ Source: PYQ_2022

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