Consider a galvanic cell built on the following half-reactions with their standard reduction potentials shown. What is ∆G° at 25 °C for the reaction involved?
Cr2O72- + 14H+ + 6e- <=> 2Cr3+ + 7H2O E° = 1.20 V
H2O2 + 2H+ + 2e- <=> 2 H2O E ° = 1.75 V