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Question
Which is the indicator in the above titration?
Which is the indicator in the above titration?
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Solution
The correct option is C KMnO4 itself
Potassium permanganate acts as self indicator in the presence of acidic medium.
Potassium permanganate is an oxidizing agent, which is of deep violet colour.
When used in redox titration, it gets reduced into brown coloured Mn2+ ion (in acidic media) at end point and the colour change at end point can be detected easily. Since detecting end point is the role of indicator, a separate indicator is not required in permanganate titration.
Potassium permanganate acts as self indicator in the presence of acidic medium.
Potassium permanganate is an oxidizing agent, which is of deep violet colour.
When used in redox titration, it gets reduced into brown coloured Mn2+ ion (in acidic media) at end point and the colour change at end point can be detected easily. Since detecting end point is the role of indicator, a separate indicator is not required in permanganate titration.
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