What is the Standard Reduction Potential for 2CO2 + 2e- <-> (C2O4)^2-?

[Ann Par]

Good afternoon, i have been trying to find without success the standard reduction potential for the next semireaction:

2CO2 +2e- <-> (C2O4)^2-
Could someone please help me with that or tell me where could i find this potencial?. Thanks

 

[hilbert2]

You probably have to calculate it from the Gibbs energies of formation for carbon dioxide and 1M oxalate solution, as described here: http://cbc.arizona.edu/~salzmanr/480a/480ants/halfclls/halfclls.html

 

[Borek]

Inczédy lists it as -0.64 V, giving W.M. Latimer's Oxidation potentials as a source.

 

[Dr Uma Sharma]

Good afternoon, i have been trying to find without success the standard reduction potential for the next semireaction:

2CO2 +2e- <-> (C2O4)^2-
Could someone please help me with that or tell me where could i find this potencial?. Thanks

2CO2 + 2H+ + 2e- = H2C24 (electrode potential is -0.49V)