Question

properties of bleaching powder
Give answer in points

Answer 1

bleaching powder is used for bleaching cotton, wood pulp in paper industry and for bleaching wash clothes in laundry .

used as an oxidising agent in many chemical industries .

used as for disinfecting drinking water to make it free of germs .

Answer 2

Properties of the Bleaching powder :

1)Bleaching powder is yellowish in colour and white powder and smells clorine.

2)Bleaching is soluble in water. The lime present is left behind as an insoluble salt so it is called chloride of lime.

3)When Bleaching powder is exposed to air ,it is oxydised to chlorine.

`CaOCl_2`  +   `CO_2`———>   `CaCO_3`  +  `Cl_2 `  `uarr`

4) Chlorine gas is produced ,when Bleaching powder is treated with excess of dilute acid.

`CaOCl_2`  +   `H_2SO_4` (dilute)   ———>  `CaSO_4`  + `H_2O`   +  `Cl_2 `  `uarr`