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## Homework Statement

I have to calculate the redox potential of this equation:

Cr2(SO4)3 + 4K2SO4 + 3J2 +7H2O <=> K2Cr2O7 + 6KJ +7H2SO4

I used the nernst equation to calculate the potentials of

2Cr(3+)+7H2O -> Cr2O7(2-) +14H(+) +6e(-) and

I2 +2e(-) ->2J(-)

which were -1.42V and 0.51V, all ion concentrations were 0.1

Is the overall redox potential the sum of these potentials?