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The standard readuction potential at 298...

The standard readuction potential at 298 k for the followng half cell reaction are
`Zn^(2)+2e^(-)rarrZn(s),E^(@)=-0.7623 V`
`Cr^(3+)(aq)+3e^(-)rarrCr(s),E^(@)=-0.70 v`
`2H^(+)(aq)+2e^(-)rarrH_(2)(g),E^(@)=0.0V`
`F_(2)+2e^(-)rarr 2f^(-)(aq)=2.87V`
which of the following is the strongest reducing agent

A

Cr (s)

B

Zn(g)

C

`H_(2)(g)`

D

`F_(2)`(g)

Text Solution

Verified by Experts

The correct Answer is:
b
`(Cr^(3+)//Cr)^(@)=0-0.74` has the most negative `E^(@)` therefore it is the strongest reducing agent
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