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

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

A

V and Hg

B

Hg and Fe

C

Fe and Au

D

Fe and V.

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
(a,b,d) species (substances) with lessser `E_("values")^(@)` than `NO_(3)^(-)` are stronger reducing agents.
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