Discussion Forum



1)

Bleaching Powder and bleach solutions 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:

Option A

Explanation:

Bleaching powder is $Ca(OCl)Cl.$ Therefore, the oxoacid whose salt is present in bleaching powder is HOCl. Anhydride of  HOCl is $-Cl_{2}O$ as $2HOCl \rightarrow Cl_{2}O+H_{2}O$

[Note The oxidation number of element in anhydride and oxoacid remains the same]