Question

In: Chemistry

From the following equilibrium constants, calculate the equilibrium constant for the reaction HO2CCO2H ----->2H+ + C2O-24...

From the following equilibrium constants, calculate the equilibrium constant for the reaction HO2CCO2H ----->2H+ + C2O-24

k1=5.6x10-2

k2=5.4x10-5

Solutions

Expert Solution

HO2CCO2H (aq) ---------------> H^+ (aq) + HO2CCO2^- (aq)    K1 = 5.6*10^-2

K1     = [H^+][HO2CCO2^-]/[HO2CCO2H]

HO2CCO2^- (aq) -------------> H^+ (aq) + C2O4^2- (aq)      K2 = 5.4*10^-5

K2   = [H^+][C2O4^2-]/[HO2CCO2^-]

HO2CCO2H(aq) ----->2H+(aq) + C2O4^2-(aq)

   K       = [H^+]^2[C2O4^2-]/[HO2CCO2H]

K1*K2    = [H^+][HO2CCO2^-]/[HO2CCO2H]   * [H^+][C2O4^2-]/[HO2CCO2^-]

K1*K2   = [H^+]^2[C2O4^2-]/[HO2CCO2H]

K1*K2    = K

K           = K1*K2

               = 5.6*10^-2 * 5.4*10^-5

               = 3.024*10^-6

HO2CCO2H ----->2H+ + C2O-24     K   = 3.024*10^-6   >>>>answer


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