Question: Using the reaction HPO24- + 2H+ + 2e- HPO2-3 = H2O E = - 0.234 V and acid dissociation constants from Appendix G, calculate

Using the reaction
HPO24- + 2H+ + 2e- ⇌ HPO2-3 = H2O E° = - 0.234 V
and acid dissociation constants from Appendix G, calculate E for the reaction
H2PO4- + H+ + 2e- ⇌ HPO2-3 + H2O

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