Explain the preparation and uses of bleaching powder. - Vidyadip

Question

Explain the preparation and uses of bleaching powder.

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Answer

Preparation :
Bleaching powder is produced by the action of chlorine on dry slaked lime $(Ca(OH)_2).$
$\mathrm{Cl}_2+\mathrm{Ca}(\mathrm{OH})_2 \rightarrow \mathrm{CaOCl}_2+\mathrm{H}_2 \mathrm{O}$
Bleaching powder is represented as $CaOCl_2$ and its chemical name is calcium oxychloride.
Uses :
$(1)$ For bleaching cotton and linen in the textile industry, for bleaching wood pulp in paper industries and for bleaching washed clothes in laundry.
$(2)$ As an oxidising agent in many chemical industries.
$(3)$ For disinfecting drinking water and making it free from germs.

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