what is the standad potential for I 2 being reduced to I- given that the standard reduction potential for Cr2O7 2- changing to Cr3+ is +1.33V I got to:
6(I -) (aq) --> 3 (I 2) (aq) + e-
2(Cr) 3+ + 5 e- --> (Cr2 O7)2-
How do I get the Standard potential Energy? (It should be +0.54V)