15.35 The following equilibrium constants have been determined for oxalic acid at 25°C. H.C204(aq) = H*(aq)...
The following equilibrium constants have been determined for oxalic acid at 25 degree C. H_2C_2O_4(aq) rightarrowoverleftarrow H^+(aq) + HC_2O_4^-(aq) K_1 = 6.5 times 10^-2 HC_2O_4^-(aq) rightarrowoverleftarrow H^+(aq) + C_2O_4^2- (aq) K_2=6.1 times 10^-5 Calculate the equilibrium constant for the following rxn at the same temperature. H_2C_2O_4(aq) rightarrowoverleftarrow H^+(aq) + C_2O_4^2- (aq)
Please answer and show all work. thank you!!!!!! 6. The following equilibrium constants have been determined for hydrosulfuric acid at 25°C: H2S(aq)<> H(aq) + HS (aq) K. = 9.5 x 10-8 HS (aq) → H+ (aq) + S2 (aq) K". = 1.0 x 10-19 Calculate the equilibrium constant for the following reaction at the same temperature: H2S(aq) → H(aq) + S2- (aq)
1) 140 pts Oxalic acid (H_C_0.) is a diprotic acid with K.: -6.5 x 10*and K - 6.1 x 10 a) (10 pts) Write two equilibrium equations for the dissociation of oxalic acid in aqueous solution (reaction with HOE b) (10 pts) Calculate (HCO. c) (5 pts) Calculate the pH of 0.10 M oxalic acid? 2 d) (10 pts) Calculate (C:01 e) (5 pts) Calculate the percent dissociation of 0.10 M oxalic acid
Calculate the concentrations of H,C204, HC204,2042, and I species in a 0.170 M oxalic acid solution (K., - 6.5 10, K,, -6.1 * 10-S). Report your answers to 2 significant figures. [H2C,04] O M [HC,04 ]- M [C,042-] - X 10 M Enter your answer in scientific notation. [H] - M Calculate the concentrations of H*, HCO3 , and Co;? in a 0.045 M H,CO, solution. K 1 of carbonic acid is 4.2 x 10-7; K 2 is 4.8 x...
Consider the following equilibrium, For oxalic acid the first and second acid dissociation constants are 5.6 times 10^-2 and 5.4 times 10^-5, respectively, and for hydrosulfuric acid the first and second acid dissociation constants are 9.5 times 10^-8 and 1.0 times 10^-19, respectively. Calculate the equilibrium constant, K_eq.
What is the pH of a solution of 0.750 M KH2PO4, potassium dihydrogen phosphate? thanks!! At 25 C phosphoric acid, H3PO4, has the following equilibrium constants: H30+ (aq) + H2 PO4 (aq) H30+ (aq) + HP042-(aq) Kal 7.5 x 10-3 Ka2=6.2×10-8 Kas4.2 x 10-13 H, PO4 (aq) + H20(1) H,PO4-(aq) + H2O(1) 근 HPO(a)+H2O()HO (a)P (aq) ▼ Part A At 25 C phosphoric acid, H3PO4, has the following equilibrium constants: H30+ (aq) + H2 PO4 (aq) H30+ (aq) + HP042-(aq)...
need help with both questions 7. Consider the following equilibrium, HS- + HC204- 5 H2S + C202-For oxalic acid the first and second acid dissociation constants are 5.6 x 102 and 5.4 x 10, respectively, and for hydrosulfuric acid the first and second acid dissociation constants are 9.5 x 108 and 1.0 x 10-19, respectively. Calculate the equilibrium constant, Keq. 12. A buffer with pH = 10.15 is to be prepared by addition solid sodium hydrogen carbonate to 1.00 L...
Consider the following equilibrium. HS^- + HC_2O_4 H_2S + C_2O_4^2-. For oxalic acid the first and second acid dissociation constants are 5.6 times 10^-2 and 5.4 times 10^-5, respectively, and for hydrosulfuric acid the first and second acid dissociation constants are 9.5 times 10^-8 and 1.0 times 10^-19, respectively. Calculate the equilibrium constant. K_eq.
References What volume of 0.125 M oxalic acid, H,C,04, is required to react with 50.9 mL of 0.764 M NaOH? H,C,04 (aq) + 2 NaOH(aq) Na2C,04 (aq) + 2 H30() Volume =
Part A - Combining Equilibrium Expressions Given the equilibrium constants for the following two reactions in aqueous solution at 25°C HNO2 (aq) = H+(aq) + NO2 (aq) Kc = 4.5 x 10-4 H2SO3(aq) = 2H+(aq) + SO32- (aq) Kc = 1.1 x 10-9 what is the value of K, for the reaction 2HNO2 (aq) + SO32- (aq) = H2SO3(aq) + 2NO2 (aq) O 4.9 10-13 O 5.4 x 10-3 O 1.8 x 102 O O 4.1 x 105 8.2 x...