The following equilibrium constants have been determined for oxalic acid at 25 °C.
H2C2O4 (aq) ⟺ H+ (aq) + HC2O4 - (aq) K1 = 6.5 x 10 -2
HC2O4- (aq) ⟺ H+ (aq) + C2O4 2- (aq) K 2 = 6.1 x 10 -5
Calculate the equilibrium constant for the following reaction at the same temperature:
C 2O4 2− + 2H + ⟺ H2C2O4 (aq)
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