Question

Bleaching powder and bleach solution are produced on a large scale and used in several household products. The effectiveness of bleach solution is often measured by iodometry.
Bleaching powder contains a salt of an oxoacid as one of its components. The anhydride of that oxoacid is :
A. `Cl_(2)O`
B. `Cl_(2)O_(7)`
C. `ClO_(2)`
D. `Cl_(2)O_(6)`

Answer 1

Correct Answer - A
Bleaching powder` to CaOCl_(2)`
`to Ca^(2+)(Ocl^(-))(Cl^(-))`
It is salt of hypochlorous acid HOCl, Anhydride of HOCl is `Cl_(2)O`
`2HOCl to Cl_(2)O+H_(2)O`