1.

The standard electromotive force of the cell Fe|Fe_((aq))^(2+) ||Cd_((aq))^(2+) |Cd If the temperature co-officlent of emf -0.125 VK^(-1), the vàlue of triangleS^(@)" at "25^@C would be

Answer»

`-20.125 KJ K^(-1)`
`-24.125KJ K^(-1)`
`26.125KJ K^(-1)`
`-22.125KJ K^(-1)`

Solution :`(dE^(@))/(dT)=(triangleS^(@))/(NF)`
`RARR triangleS^(@)=((dE^@)/(dT)) xx nF`
`=-0.125 xx 2 xx 96500`
`=-24.125 xx KJ K^(-1)`


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