Identify the oxidising agent (oxidant) in the following reactions.
$V_{2} O_{5} + 5 C a \to 2 V + 5 C a O$

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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).
$V_{2} O_{5} + 5 C a \to 2 V + 5 C a O$
In above reaction, vanadium $(V)$ oxide ( $V_{2} O_{5}$ ) acts as an oxidising agent as it oxidises calcium $(C a)$ to form calcium oxide $(C a O)$ and vanadium $(V)$ .

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