Give chemical name and formula of bleaching powder. What happens when it is exposed to air.
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calcium hypochlorite
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ca[oh]2 + cl2 -------> caocl2 + h20
Bleaching powder is hygroscopic so when kept open to air it absorbs moisture from atmosphere and becomes soggy over a period of time. As it absorbs moisture it loses chlorine and thus loses its property.
regards harshul
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