Which reactants are used to prepare bleaching powder?

Question

Which reactants are used to prepare bleaching powder? — Exam MCQ

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C. Chlorine gas and dry calcium hydroxide — Bleaching powder is chemically known as calcium hypochlorite (Ca(OCl)2). It is prepared by the reaction of chlorine gas (Cl2) with dry calcium hydroxide (Ca(OH)2). The chemical reaction for the preparation is: 2Ca(OH)2 + 2Cl2 → Ca(ClO)2 + CaCl2 + 2H2O. Bleaching powder is commonly used to disinfect drinking water and as a bleaching agent in the textile and paper industries.

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A. Lime and sulphuric acid

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B. Calcium hydroxide and hydrochloric acid

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D. Chlorine and water

Which reactants are used to prepare bleaching powder?

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