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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) :

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
`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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Standard reduction potential of the half cell reactions are given below Co^(3+)(aq) + e^(1-) to Co^(2+)(aq) , E^0 = +1.81 V Au^(3+)(aq) + 3e^(1-) to Au(s) , E^0 = +1.40 V I_(2)(s) + 2e^(1-) to 2l^(1-)(aq) , E^0 = +0.54 V Cu^(2+)(aq) + 2e^(1-) to Cu(s) , E^0 = +0.34 V

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_((aq))^(2+)2e^(-)toV" "E^(0)=-1.19V Fe_((aq))^(3+)+3e^(-)toFe" "E^(@)=-0.04V Ag_((aq))^(3+)+3e^(-)toAu" "E^(0)=+1.40V Hg_((aq))^(2+)+2e^(-)toHg" "E^(o)=+0.86V The pair(s) of metals that is (areO oxidized by NO_(3)^(-) in aqueous solution is(are)

Knowledge Check

  • 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
    `Fe` and `Au`
    B
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    C
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    D
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  • 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
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  • For the reduction of NO_(3)^(-) ion in an aqueous solution E^(@) is +0.96V . Value of E^(@) for some metal ions are given below V^(2+)(aq)+2e^(-)rarrV E^(@)=-1.19V Fe^(3+)(aq)+3e^(-)rarrFe E^(@)=-0.04V Au^(3+)(aq)+3e^(-)rarrAu E^(@)=+1.40V Hg^(2+)(aq)+2e^(-)rarrHg E^(@)=+0.86V The pair(s) of metal that is/are oxidised by NO_(3)^(-) in aqueous solution is(arE):

    A
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    B
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    C
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