Identify the substance oxidised, reduced, oxidising agent and reducing agent for the following reaction-
$2 A g B r (s) + C_{6} H_{6} O_{2} (a q) \to 2 A g (s) + 2 H B r (a q) + C_{6} H_{4} O_{2} (a q)$

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Solution

$2 + 1 A g B r (s) + C_{6} H_{6} O_{2} (a q) \to 2 0 A g (s) + 2 H B r (a q) + C_{6} H_{4} O_{2} (a q)$

$A g^{+}$ is reduced and acts as oxidizing agent.
$C_{6} H_{6} O_{2}$ is oxidized because of dehydrogenation and it acts as reducing agent.

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