In the following reactions, which species is the reducing agent?
$3 C u + 6 H^{+} + 2 H N O_{3} \to C u^{2 +} + 2 N O + 4 H_{2} O$

H^{+}

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C u

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N O

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C u^{+ 2}

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Solution

The correct option is B $C u$
Here $C u$ is the reducing agent. It changed to $C u^{+ 2}$ because of reducing other. So, it is the reducing agent here.

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{C u}_{2} I_{2} H_{2} O - - \to C u + C u I_{2}

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