Question

chemical reaction of bleaching powder​

Answer 1

Ca(OH)² + cl² -----> CaOCl²+H²O

Ca(OH)² = Calcium hydroxide

Cl² = Chlorine

CaOCl² = Calcium oxychloride

H²O = water

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Answer 2

$\huge\mathfrak{ANSWER:-}$

Bleaching powder is Ca(ClO)2 known as calcium hypochlorite. The commercial powder form is a mixture of Ca(OH)2, CaCl2 and Ca(ClO)2. In water the powder hydrolyses to hypochlorous acid, HOCl, which hydrolyses to HCl and reacts further to produce chlorine, the active chemical of bleaching powder, thus:

HOCl + HCl = H2O + Cl2

The bleaching mechanism depends on the pH of the solution of the powder in water.

In strongly acidic solution, HOCl is formed which produces HCl and chloric acid, HClO3:

3HOCl = HClO3 + 2HCl

The reason for the mixture of above chemicals in bleaching powder is that it maximises available chlorine for bleaching or disinfections. All of the Ca+ ions end up associated with Cl- ions as the chloride.

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