Question

How will you prepare bleching powder and give the bleaching action of chlorine

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Answer 1

Answer:

hi.

Chlorine bleaches by the process of oxidation. It needs moisture for its bleaching action.

Chlorine reacts with water to form hydrochloric and hypochlorous acids.

Cl2 + H2O ——→ HCl + HClO

Hypochlorous acid is unstable, and it easily dissociates to form nascent oxygen.

HClO ——→ HCl + [O]

Nascent oxygen is a more powerful oxidising agent. Its formation is responsible for the bleaching nature of chlorine in the presence of moisture.

OR

ANSWER

Bleaching action of chlorine is by oxidation.  

Chlorine reacts with moisture to form nascent oxygen which oxidises the vegetable colouring matter to a colourless product.

Cl2+H2O→2HCl+[O]