Bleaching powder and bleach solution are produced on a large scale and used in several household products.…
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.
Question: Bleaching powder contains a salt of an oxoacid as one of its components. The anhydride of that oxoacid is
$\mathrm{Cl}_{2} \mathrm{O}$
$\mathrm{Cl}_{2} \mathrm{O}_{7}$
$\mathrm{ClO}_{2}$
$\mathrm{Cl}_{2} \mathrm{O}_{6}$
Solution
$\mathrm{Ca}(\mathrm{OCl}) \mathrm{Cl} \longrightarrow \mathrm{Ca}^{2+}+-\mathrm{OCl}+\mathrm{Cl}^{-}$
-OCl (Hypochlorite ion) is anion of the acid HOCl which on dehydration gives $\mathrm{Cl}_{2} \mathrm{O}$.
$2 \mathrm{HOCl} \longrightarrow \mathrm{H}_{2} \mathrm{O}+\mathrm{Cl}_{2} \mathrm{O}$