Which of the following will not produce Cl2 when________

Engineering

Chemistry

Compounds of Halogen Family

Available Chlorine and Bleaching Powder

Reactions of Acid and Base

Question

Which of the following will not produce Cl₂ when_________

Bleaching powder reacts with atmospheric CO₂

Bleaching powder treated with water.

Bleaching powder is heated.

Bleaching powder reacts with dilute HCl.

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Bleaching powder (CaOCl₂) releases chlorine (Cl₂) in reactions with acids (like dilute HCl), atmospheric CO₂, or when heated. However, when treated with just water, it undergoes hydrolysis and does not produce Cl₂ gas. The reaction is:

$2 CaOCl_{2} \to Ca (ClO)_{2} + CaCl_{2}$

Final answer: Bleaching powder treated with water.