Write the formula and chemical name of bleaching powder.

Question

(i) Write the formula and chemical name of bleaching powder.
(ii) Write chemical equation to represent the action of atmospheric CO, gas on bleaching powder when left exposed in open.

(iii) State for what purpose is bleaching powder used in water treatment plants.

Answer 1

(i) Chemical formula: CaOC₂ 

Chemical name: Calcium oxycliloricle
(ii) CaOCl₂(s)    +  CO₂(g) ----> CaCO₃(s)     + Cl₂(g)
Bleaching powder     Carbon dioxide     calcium carbonate     Chlorine
(iii) Bleaching powder is used in water treatment plants for disinfecting drinking water to make it free of germs.