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. $Cl_2O$
• B. $Cl_2O_7$
• C. $ClO_2$
• D. $Cl_2O_6$

Answer 1

Answer: (A)

$Cl_2O$

Answer 2

$\underset{\text{(Bleaching powder)}}{Ca(OCl)Cl} \to Ca^{+2} + \overset{-}{O}Cl + Cl^-$ $\underset{\text{(oxo acid}}{HOCl} {->[\Delta]} H^+ + OCl^-$ $2HOCl {->[\Delta]} H_2O + Cl_2O$ Anhydride of oxoacid $(HOCl)$ is $Cl_2O$.