Consider `Delta G^(@)` for the following cell reaction : `Zn (s) + Ag_(2)O(s)+H_(2)O(l) hArr Zn^(2+)(aq)+2Ag(s)+2OH^(-)(aq)` `E_(Ag^(+)//Ag)^(@) = +0.

Question

Consider `Delta G^(@)` for the following cell reaction : `Zn (s) + Ag_(2)O(s)+H_(2)O(l) hArr Zn^(2+)(aq)+2Ag(s)+2OH^(-)(aq)` `E_(Ag^(+)//Ag)^(@) = +0.

Consider `Delta G^(@)` for the following cell reaction :
`Zn (s) + Ag_(2)O(s)+H_(2)O(l) hArr Zn^(2+)(aq)+2Ag(s)+2OH^(-)(aq)`
`E_(Ag^(+)//Ag)^(@) = +0.80` and `E_(Zn^(2+)//Zn)^(@) = - 0.76 V`
A. `-305 kJ//mol`
B. `-301 kJ//mol`
C. `+305kJ//mol`
D. `+301kJ//mol`

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - B
`E^(@) = E_(Ag^(+)//Ag)^(@) - E_(Zn^(2+)//Zn)^(@)`
`= +0.80 -(0.76)`
`= +1.56 V`
`Delta G^(@) = -nFE^(@)`
`= - 2 xx 96500 xx 1.56`
`= - 301080 J`
`= - 301.08 kJ`

4 views Answered 2023-02-05 15:29