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Why can bleaching powder give a chlorine-like smell when kept in moist air?

Answer and explanation

Correct answer: Because it can react with moisture and carbon dioxide to release chlorine

Bleaching powder contains hypochlorite and chloride species and is not completely stable in moist air. Moisture and carbon dioxide can promote decomposition or acidification of its chlorine-containing components, allowing a small amount of chlorine or related active chlorine to escape and produce the characteristic smell. It does not become sodium chloride, absorb oxygen as the main process, or freeze water.

Related tags

Bleaching PowderChlorineStorageAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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