Question

Bleaching powder contains a salt of an oxoacid as one of its components. The anhydride of that oxoacid is

• A. $\ce{Cl_2 O}$
• B. $\ce{Cl_2 O_7}$
• C. $\ce{ClO_2}$
• D. $\ce{Cl_2 O_6}$

Answer 1

Answer: (A)

$\ce{Cl_2 O}$

Answer 2

Chemical formula of bleaching powder
$= Ca(OCl)Cl$
Salt of oxoacid is $= OCl^-$
Here, oxoacid is $= HOCl$
Anhydride of $HOCl$ is $Cl_2O$.