Calculate the equilibrium constant for each of the reactions in Problem 66.

Problem 66

Use tabulated electrode potentials to calculate ΔG°_rxn for each reaction at 25 °C.

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2+ a. 2 Fe³+ (aq) + 3 Sn(s) 2 Fe(s) + 3 Sn²+ (aq) b. O₂(g) + 2 H₂O(l) + 2 Cu(s) →→→ 4 OH(aq) + 2 Cu²+ (aq) c. Br₂(1) + 21 (aq) 2 Br (aq) + 1₂(s)