What are the answers for the last two parts

Does the colour of potassium permanganate persist when it is added initially ?

Why does the colour of potassium permanganate not disappear when excess is added ?

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Solution

Dear student,
When a solution of ethyl alcohol and alkaline KMnO4 is heated the pink colour of the solution disappears. Since, KMnO4 is a strong oxidising agent it oxidises ethanol to ethanoic acid by donating nascent oxygen. If excess of KMnO4 is added the the purple color will persist as now ethanoic acid is formed and the colour is due to the excess of potassium permagnate.
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What are the answers for the last two parts Does the colour of potassium permanganate persist when it is added initially ? Why does the colour of potassium permanganate not disappear when excess is added ?

What are the answers for the last two parts

Does the colour of potassium permanganate persist when it is added initially ?

Why does the colour of potassium permanganate not disappear when excess is added ?