Question

In the reaction
$2 K _{3}\left[ Fe ( CN )_{6}\right]+2 KOH + H _{2} O _{2} \rightarrow 2 K _{4}\left[ Fe ( CN )_{6}\right]+2 H _{2} O + O _{2}, H _{2} O _{2}$ acts as

• A. Reducing agent
• B. Oxidising agent
• C. Knocking agent
• D. Bleaching agent

Answer 1

Answer: (A)

$H _{2} O _{2}$ reduces potassium ferricyanide to potassium ferrocyanide
$2 K _{3}\left[ Fe ( CN )_{6}\right]+2 KOH + H _{2} O _{2} \rightarrow 2 K _{4}\left[ Fe ( CN )_{6}\right]+2 H _{2} O + O _{2}$