Question

when exposed to air, bleaching powder gives smell of chlorine. why?

Answer 1

Bleaching powder is chemically, calcium oxychloride (CaOCl2). Bleaching powder can be manufactured by using two types of manufacturing plants : Backmann’s plant and Hasenclever plant. It is manufactured by passing chlorine gas over slaked lime.



Bleaching powder is a yellowish white powder with a strong smell of chlorine. When exposed to air, bleaching powder gives a smell of chlorine. This is because bleaching powder reacts with carbon dioxide from the atmosphere to produce calcium carbonate and chlorine gas.

Answer 2

because bleaching powder is made by using chlorine gas and when exposed to air it gives back chlorine gas