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Question

Select the strongest reducing agent from amongst the substances involved in the following half-reactions.
Cl2(g)+2e2Cl(aq)+1.36V
Br2(g)+2e2Br(aq)+1.09V
Sn2++2eSn0.14V

A
Cl
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B
Br
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C
Sn
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D
Sn2+
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Solution

The correct option is A Cl
The strongest reducing agent should have the lowest reduction potential.
The reduction potential increases in the following order,
Cl<Br<Sn2+<Sn
Therefore, Cl is the strongest reducing agent.

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