Question

Consider the two reactions :
(i) $H_{2}O_{2} +2 KI \to I_{2}+2KOH$
(ii) $H_{2}O_{2} +O_{3} \to2O_{2}+H_{2}O$
$H_{2}O_{2} $ behaves as

• A. an oxidising agent in both (i) and (ii)
• B. an oxidising agent in (i) and reducing agent in (ii)
• C. a reducing agent in (i) and oxidising agent in (ii)
• D. a reducing agent in both (i) and (ii).

Answer 1

Answer: (B)

$H_{2}O_{2} $ oxidises KI to $I_{2}$ and reduces $O_{3} \, to \,O_{2} \, gas.$