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The standard reduction potentials at 298...

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

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