Question

Given `E_("Cr_(2)O_(7)^(2-)//Cr^(3+))^(@)=1.33V,E_(MnO_(4)^(-)//Mn^(2+))^(@)=1.51V`
Among the following, the strongest reducing agent is `E_(Cr^(3+)//Cr)^(@)=-0.74V^(x),E_(MnO_(4)^(-)//Mn^(2+))^(@)=1.51V`
`E_(Cr_(2)O_(7)^(2-)//Cr^(3+))^(@)=1.33V,E_(Cl//Cl^(-))^(@)=1.36V`
Based on the data given above strongest oxidising agent will be
A. `Mn^(2+)`
B. `MnO_(4)^(-)`
C. `Cl^(-)`
D. `Cr^(3+)`

Answer 1

Correct Answer - B
Greater is the positive value of standard reduction potential, stronger will be the oxidising behaviour.