Question

Explain the making procedure of bleaching powder and its use.

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Answer 1

Preparation of Bleaching Power :

Chlorine gas is produced during electrolysis of aqueous sodium chloride.

This chlorine gas is used for the manufacture of bleaching powder.

Bleaching powder is produced by the action of a chlorine on slaked lime.

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Answer 2

↭ Bleaching Powder :-

• Bleaching powder is a pale yellowish powder existing with a strong smell of chlorine.

• It is soluble in water but due to the presence of impurities, we never observe a clear solution.

• Its chemical formula is CaOCl₂ with its chemical name as Calcium hypochlorite.

↭ Preparation :-

Bleaching powder is synthesized by the action of chlorine gas (produced from the chlor-alkali process) on dry slaked lime .

Ca( OH )₂ + Cl₂ ↦ CaOCl₂ + H₂O

↭ Uses :-

• It is used for bleaching dirty clothes in the laundry, as a bleaching agent for cotton and linen in the textile industry.

• It is a strong oxidizing agent, hence used as an oxidizer in many industries.

• It is used as a disinfectant which is used for disinfecting water to make potable water.