Question

Why does potassium permanganate stored in dark bottles?

Answer 1

Exposure to light can provide enough energy for the permanganate to oxidise water, forming either oxygen or peroxide, when stored for prolonged periods. Potassium permanganate decomposes slowly in sunlight and readily

oxidises organic matter like H O forming either oxygen or peroxide when stored for prolonged periods. When it is used in a reaction, the exposure time is too short for this to happen, so reactions can be performed without excluding light Because of this the solution should be used

dark bottle in the absence of light. Under sunlight, permanganate solution will decompose to give MnO and O2

Answer 2

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Potassium permanganate (KMnO4) stored in dark bottles because to not exposed to light, If it exposed to light it will start decomposing.

Small amount of light can provide enough energy for the permanganate to oxidise water.

❱ Potassium permanganate is not a primary standard.

❱ It is difficult to obtain the substance perfectly pure and completely

❱ Potassium permanganate is an inorganic chemical compound and medication.

❱ It is used for cleaning wounds and dermatitis.

❱ It has the chemical formula KMnO₄ and is a salt consisting of K⁺ and MnO− ₄ ions.

❱ It is a strong oxidizing agent.

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