Find stndrd potential of 0.5 rcn using stndrd delta G values

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Rachael_1H
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Joined: Fri Sep 25, 2015 3:00 am

Find stndrd potential of 0.5 rcn using stndrd delta G values

Postby Rachael_1H » Thu Feb 04, 2016 10:07 am

When calculating the standard potential for a half reaction, such as U4+ + 4e- ---> U, why do you have to convert the standard potentials of the half reactions U4+ + e- ---> U3+ and U3+ + 3e- ---> U to their standard delta G values, and then add their standard delta G values to find the standard potential of the desired half reaction? Why cant you just add the two different half reactions' standard potentials?

Chem_Mod
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Re: Find stndrd potential of 0.5 rcn using stndrd delta G va

Postby Chem_Mod » Fri Feb 05, 2016 8:20 pm

cell potential is not a state function so we need to convert that to gibbs free energy(which is a state function) to calculate the overall cell potential.


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