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

Options

A. `Zn_((s))`
B. `Cr_((s))`
C. `H_(2(g))`
D. `Fe_((aq))^(2+)`

Answer

A

Explanation

More negative the value of reduction potential , stronger is the reducing property i.e. power to accept electrons.