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

For the reduction of `NO_(3)^(c-)` ion in an aqueous solution, `E^(c-)` is `+0.96V`, the values of `E^(c-)` for some metal ions are given below `:`
`i.V^(2+)(aq)+2e^(-)rarr V, " "E^(c-)=-1.19V`
`ii. Fe^(3+)(aq)+3e^(-) rarr Fe, " "E^(c-)=-0.04V`
`iii. Au^(3+)(aq)+3e^(-) rarr Au, " "E^(c-)=+140V`
`iv. Hg^(2+)(aq)+2e^(-) rarr Hg, " "E^(c-)=+0.86V`
The pair`(s)` of metals that is `//` are oxidized by `NO_(3)^(c-)` 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
Since with `V, Fe` and `H_(2),E^(@)` of cell is positive so `DeltaG^(@)` will be negative.
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