1.

Among the following, the strongest reducing agent is:-

Answer»

`Mn^(2+)`
`Cr^(3+)`
`CL^(-)`
`Cr`

Solution :For strongest reducing agent `E_(OP)^(o)` should be MAXIMUM
`_(OPCr//Cr^(+3))^(o)=0.74V`
WHEREAS
`E_(OPMn^(2+)//MnO_(4)^(-))^(o)=-1.5V`
`E_(OPCr^(3+)//Cr_(2)O_(7)^(-2))^(o)=-1.33V""E_(OPCL^(-)//Cl_(2))=-1.36V`


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