The standard reduction potentials at 298K, for the following half cells are given:
`Zn^(2+)(aq)+2e^(-)hArrZn(s):E^(@)=-0.762V`
`Cr^(3+)(aq)+3e^(-)hArrCr(s):E^(@)=-0.740V`
`2H^(+)(aq)+2e^(-)hArrH_(2)(g), E^(@)=0.000V`
`Fe^(3+)(aq)+e^(-)hArrFe^(2+)(aq),E^(@)=0.770V`
Which is the stronget reducing agent?

Options

A. Zn(s)
B. Cr(s)
C. `H_(2) (s)`
D. `Fe^(2+) (aq)`

Answer

A

Explanation

Higher the oxidation potential (or lower the reduction potential ) stronger the reducing agent .