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Question

The standard reduction potential at 298 K for the following half cell reaction
Zn2+(aq)+2eZn(s)E=0.762 V
Cr3+(aq)+3eCr(s)E=0.740 V
2H+(aq)+2eH2(g)E=0.0 V
F2(g)+2e2F(aq)E=2.87 V
Which of the following is the strongest reducing agent?

A
Zn(s)
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B
Cr(s)
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C
H2(g)
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D
F2(g)
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Solution

The correct option is A Zn(s)
More negative the value of the reduction potential, higher is the reducing power and hence, stronger is the reducing agent.

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