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The standard reduction potentials at 25^...

The standard reduction potentials at `25^(@)C` for the following half reactions are given against each:
`Zn^(2+) (a.q) + 2e^(-) rarr Zn (s) : " " - 0.762`
`Cr^(3+) (a.q) 3e^(-) rarr Cr (s) , " " - 0.740`
`2H^(+) + 2e^(-) rarr H_(2) (g), " " 0.00`
`Fe^(3+) + e^(-) rarr Fe^(2+) , " " 0.77`
Which is the strongest reducing agent?

A

`Zn_((s))`

B

`Cr_((s))`

C

`H_(2(g))`

D

`Fe_((aq))^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
A
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