Use the appropriate standard reduction potentials in the appendix of your book to determine the equilibrium constant at 321.0 K for the following reaction under acidic conditions. See the hint for E^compositefunction values 4H^+(aq) + MnO_2(s) + 2Fe^2+ + (aq) rightarrow Mn^2+ (aq) + 2Fe^3+ (aq) + 2H_2O(l) K = 5.077 times 10^12
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