Identify the oxidising agent (oxidant) in the following reactions.

$P b_{3} O_{4} + 8 H C l \to 3 P b C l_{2} + C l_{2} + 4 H_{2} O$

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Solution

An oxidising agent is the one which oxidises other substances (by removal of hydrogen or addition of oxygen) and itself gets reduced (addition of hydrogen or removal of oxygen).

$P b_{3} O_{4} + 8 H C l \to 3 P b C l_{2} + C l_{2} + 4 H_{2} O$

In the above reaction, lead oxide ( $P b_{3} O_{4}$ ) acts as an oxidising agent as it oxidises hydrochloric acid $(H C l)$ to chlorine ( $C l_{2}$ ).

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