Question

Why potassium permanganate is used to prepare chlorine gas from concentrated hydrochloric acid?

Answer 1

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Potassium permanganate is an inorganic salt. It dissolves in water to give intensely purple solutions. Potassium permanganate solution (KMnO4) is oftenused in analytical chemistry as an oxidising titrant for redox titrations. ... Thepotassium permanganate andhydrochloric acid will result in chlorine gasbeing evolved.

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Answer 2

Add concentrated hydrochloric acid dropwise onto a small quantity of potassium permanganate crystals (in a flask). Collect the chlorine gas by upward displacement of air in a hood. ... Concentrated hydrochloric acid is extremely caustic. Chlorine gas is toxic.