For the reduction of NO(3)^(-) ion in an...

For the reduction of `NO_(3)^(-)` ion in an aqueous solution, is +0.96V. Values of for some metal ions are given below :
`V^(2+)(aq)+ 2e^(-)rightarrowV`, `E^(@)= -1.19V`
`Fe^(3+)(aq)+ 3e^(-) rightarrow Fe` , `E^(@) = -0.04 V`
`Au^(3+)(aq) + 3e^(-) rightarrow Au` , `E^(@) = +1.40V`
`Hg^(2+) (aq)+ 2e^(-) rightarrowHg` , `E^(@) = + 0.86 V`
The pair(s) of metals that is(are) oxidised by `NO_(3)^(-)` in aqueous solution is(are) :

V and Hg

Hg and Fe

Fe and Au

Fe and V

Text Solution

Verified by Experts

The correct Answer is:

A, B, D

`E_(NO_(3)^(-)(aq))^(@)=0.96V` All V, Fe ,Hg have less SRP w.r.t. `NO_(3)^(-)`,
So, V, Fe, Hg can be oxidized by `NO_(3)^(-)` ln aqueous solution.

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