(i) Write the formula and chemical name of bleaching powder. (ii) Write chemical equation to represent the action of atmospheric CO_2 gas on bleaching powder when left exposed in open. (iii) State for what purpose is bleaching powder used in water treatment plants.

(i) Write the formula and chemical name of bleaching powder. (ii) Wri

1.	(i) Write the formula and chemical name of bleaching powder. (ii) Write chemical equation to represent the action of atmospheric CO_2 gas on bleaching powder when left exposed in open. (iii) State for what purpose is bleaching powder used in water treatment plants.
Answer» Solution :(i) Chemical FORMULA : `CaOCl_2` Chemical name :Calcium oxychloride (ii) `underset("Bleaching powder")(CaOCl_(2)(s))+underset("Carbon dioxide")(CO_2(g))rarrunderset("Calcium carbonate")(CaCO_3(s))+underset("CHLORINE")(Cl_(2)(g))` (iii) Bleaching powder is used in water TREATMENT PLANTS for disinfecting drinking water to make it free of germs.