Calculate hte stndard freeenergy change for the following re

Calculate hte stndard free-energy change for the following reaction at 25C.
Standard reduction potentials can be found here: https://sites.google.com/site/chempendix/potentials

2Au3+(aq)+ 3Cr(s) <--> 2Au(s) + 3Cr2+(aq)

DeltaG^o= kJ

Solution

Cr -----> Cr2+ +2e- Eo = +0.91 V
au3+ + 3e- -----> au Eo = +1.498 V
Eo(cell) =( .91+1.498) V=2.408v

dGo = -nFEo
dGo = -6 mol x 96,500 C/mol x 2.408 J/C = -1394232 J
= -1394.232 kJ