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The E^(@) at 25^(@)C for the following r...

The `E^(@)` at `25^(@)`C for the following reaction at the indicated concentrations is 1.50 V. Calculate the `DeltaG` in kJ`//`mol `25^(@)`C :

A

`-140.94`

B

`-295`

C

`-212`

D

`-422.83`

Text Solution

Verified by Experts

The correct Answer is:
D
`DeltaG = DeltaG^(@) + RT ln Q`
`rARr -nFE^(@) + 2.303 RT log ([Cr^(3+)])/([Ag^(3)]^(3))`
`DeltaG = -3 xx 96500 xx 1.50 + 8.314298 xx 2.303 log (0.1)/(0.1)^(2)`
`rArr -422838.3 J` or `-422.83` kJ
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