Which of the following acids is added in the titration of oxalic acid and potassium permanganate?

H N O_{3}

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H C l

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C H_{3} C O O H

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H_{2} S O_{4}

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Solution

The correct option is D $H_{2} S O_{4}$

$K M n O_{4}$ is the titrant and oxalic acid is the analyte. Here, potassium permanganate is the oxidizing agent and oxalic acid is the reducing agent. The reaction between potassium permanganate and oxalic acid is carried out in an acidic medium because permanganate ion in the acidic medium is a very strong oxidizing agent. Acidity is introduced by adding dil. $H_{2} S O_{4}$ .
hence option D is correct.

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