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Calculate Delta(r)G for the reaction at...

Calculate `Delta_(r)G` for the reaction at `27^(@)C`
`H_(2)(g)+2Ag^(+)(aq)hArr2Ag(s)+2H^(+)(aq)`
Given : `P_(H2)=0.5` bar, `[Ag^(+)]=10^(-5)M,`
`[H^(+)]=10^(-3)M,Delta_(r)G^(@)[Ag^(+)(aq)]=77.1kJ//mol`

A

`-154.2kJ//mol`

B

`-178.9kJ//mol`

C

`-129.5kJ//mol`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • The reaction Ag ^(2+)(aq) + Ag (s) hArr 2 Ag ^(+) (aq) An example of.

    A
    Reduction
    B
    Oxidation
    C
    Disproportionation
    D
    none

  • The cell reaction 2 Ag^+ (aq) + H_2(g) to 2H^+ (aq) + 2 Ag(s) is best represented by :

    A
    `Ag(s)|Ag^+ (aq)||H^+ (aq)|H_2(g)| Pt(s)`
    B
    `Pt(s)|H_2(g) |H^(+)(aq)||Ag^(+)(aq)Ag(s)`
    C
    `Ag(s) |Ag^(+)(aq)||H_2(g)|H^(+)(aq)|Pt(s)`
    D
    `Ag^(+)(aq)|Ag(s)||H_2(g)|H^(+)(aq)`

  • Following reaction is an example of Ag^(2+) (aq) + Ag (s) hArr 2Ag^(+) (aq)

    A
    reduction
    B
    oxidation
    C
    comproportionation
    D
    disproportionation