The standard reduction potential at 298 K for the following half cell reaction are
`Zn^(2)(aq) + 2e rarr Zn(s)E^@ = -0.762 V`
`Cr^(3+)(aq) + 3e rarr Cr(s)E^@ = 0.740 V`
`2H^+(aq)+ 2e rarr H_2(g)E^@ = 0.0V`
`F_2(g) + 2e rarr 2F^(-) (aq)E^@ = 2.87 V`
Which of the following is strongest reducing agent ?

Options

A. `Zn(s)`
B. `Cr(s)`
C. `H_2(g)`
D. `F_2(g)`

Answer

A

Explanation

More the negative value of reduction potential, higher the reducing power, thus the strongest reducing agent is zinc.