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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) Cl2O

B) Cl2O7

C) ClO2

D) Cl2O6

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 Cl2O as 2HOClCl2O+H2O

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