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Given CH3CO H(aq) = H(aq) + CH3CO2 (aq) at 25°C, Kg = 1.83 x 102. What...
Consider the following chemical reaction at 25°C: CH3CO2H(aq) =H+(aq) + CH3CO; (aq), Ka = 1.83x10-5 Compute AG at...
Consider the following chemical reaction at 25°C: CH3CO2H(aq) =H+(aq) + CH3CO; (aq), Ka = 1.83x10-5 Compute AG at 25°C for a solution in which the initial concentrations are: [CH3CO2H]. = 0.10M [H'l. = 4.5x10-8M (CH3COį lo = 0.010M AG= kJ/mol
A(aq) + B(aq) = C(aq) has a standard free-energy change of -4.56 kJ/mol at 25°C. What...
A(aq) + B(aq) = C(aq) has a standard free-energy change of -4.56 kJ/mol at 25°C. What are the concentrations of A, B, and C at equilibrium if, at the beginning of the reaction, their concentrations are 0.30 M, 0.40 M, and O M, respectively? [A] = [B] = (C)= 96
The equilibrium constant for the equation HNO3(aq) + H2O(l) = H, 0+ (aq) + NO2 (aq) is Kg = 5.6 x 10-4 M at 25.0 °C. Ca...
The equilibrium constant for the equation HNO3(aq) + H2O(l) = H, 0+ (aq) + NO2 (aq) is Kg = 5.6 x 10-4 M at 25.0 °C. Calculate the value of AGixn at 25.0 °C for nitrous acid when [NO2] = [H3O+] = [HNO2] = 1.00 M. AGixn = kJ/mol Will the acid spontaneously dissociate under these conditions? O no O yes Calculate the value of AGrxn for nitrous acid when [NO, ] = [H,O+] = 7.13 x 10- M and...
(a) Calculate ?G for the reaction: 2H,000 H()+OH (ag) at 25 C given the following initial...
(a) Calculate ?G for the reaction: 2H,000 H()+OH (ag) at 25 C given the following initial concentrations. HO] 1.0x 10-12 M and (OH]- 20 x10* M (b) Predict the direction in which the reaction will proceed spontaneously to establish equilibrium. 10. The AG° for the reaction: N,(g)+3H,(g)0 2NH,(g) is 33.3 kJ/mol at 25°C. What is the value of Kp?
Given: C+++ (aq) +3e" = Cr(s);E°=-0.74V Ag+ (aq) +e Ag(s); E° = 0.80 V What is...
Given: C+++ (aq) +3e" = Cr(s);E°=-0.74V Ag+ (aq) +e Ag(s); E° = 0.80 V What is the cell potential at 25°C for the following cell? Cr(s) | Cr3+(0.010 M) || Ag+(0.00025 M) | Ag(s) a) 1.71 V b) 1.51 V O c) 0.95 V d) 2.09 V e) 1.37 V
Question 25 ***A 50 mL solution of 0.10 M HC2H2O2(aq) (Kg = 1.8 x 10-5) is...
Question 25 ***A 50 mL solution of 0.10 M HC2H2O2(aq) (Kg = 1.8 x 10-5) is titrated with 0.20 M NaOH (aq)** What is the pH after the addition of 5.0 mL of NaOH (aq)? 4.14 o 4.74 2.87 8.98 O 3.58 Previous
14. (20 pts total) Consider the following cell reaction at 25 o°C: 2 Al(s)3 Ni (aq)>2...
14. (20 pts total) Consider the following cell reaction at 25 o°C: 2 Al(s)3 Ni (aq)>2 A (aq) +3 Ni(s) Calculate the following: a. (10 pts) Under standard conditions, calculate the Gibbs Free Energy, AG , in J. (Standard reduction potentials are in the last page of the exam) b. (10 pts) At non-standard conditions, if the concentrations of Ni respectively, calculate the E, in V. Assume T 25 °C. and Al are 0.015 M and 0.010 M,
cace). The Ka for acetic acid. HCHO(ag) is 1.8 X 10 at 25°C Write the chemical...
cace). The Ka for acetic acid. HCHO(ag) is 1.8 X 10 at 25°C Write the chemical reaction that chemical reaction that describes the dissociation of acetic acid. C2 1 2 0 2 (aq) + H3 1 C2 H 3 O 2 caq) + H 2 O (1) Given the following standard enthalpies of formation Substance AH® (kJ/mol) (T= 25°C) HC2H3O2(aq) -485.76 C2H302 (aq) -486.01 H(aq) Calculate the K, at 35 °C. Qualitatively, how would expect the pH of a solution...
The following reaction was studied experimentally at 25 °C. S2O82(aq) + 21'(ag) = 12(aq) + 2SO4...
The following reaction was studied experimentally at 25 °C. S2O82(aq) + 21'(ag) = 12(aq) + 2SO4 (aq) The reaction was found to be first order with respect to I and first order with respect to S208". A reaction was performed with [1] = 0.080 M and [S208²-] = 0.040 M. The initial rate of formation of 12 was found to be 1.25 x 10-M St. Provide an expression for the rate law for this reaction and determine the initial rate...
please help 7. (18 points) Consider the reaction: Nia (aq) +H.000) = OH(aq) + HNla(aq) K...
please help
7. (18 points) Consider the reaction: Nia (aq) +H.000) = OH(aq) + HNla(aq) K = 6.25x101 @25°C SHOW ALL WORK Note: HNia weak acid Niacin (COHON, one of the B vitamins) AG = A. (6 points) What is AG"(KI) for this reaction ſhow your work. --RTink B. (12 points) What are the equilibrium concentrations (M) of each species in a solution that was prepared by mixing 0.157 moles of HNia and 0.315 moles of Nia- in a 1.000...
Consider the following chemical reaction at 25°C: CH3CO2H(aq) =H+(aq) + CH3CO; (aq), Ka = 1.83x10-5 Compute AG at 25°C for a solution in which the initial concentrations are: [CH3CO2H]. = 0.10M [H'l. = 4.5x10-8M (CH3COį lo = 0.010M AG= kJ/mol
A(aq) + B(aq) = C(aq) has a standard free-energy change of -4.56 kJ/mol at 25°C. What are the concentrations of A, B, and C at equilibrium if, at the beginning of the reaction, their concentrations are 0.30 M, 0.40 M, and O M, respectively? [A] = [B] = (C)= 96
The equilibrium constant for the equation HNO3(aq) + H2O(l) = H, 0+ (aq) + NO2 (aq) is Kg = 5.6 x 10-4 M at 25.0 °C. Calculate the value of AGixn at 25.0 °C for nitrous acid when [NO2] = [H3O+] = [HNO2] = 1.00 M. AGixn = kJ/mol Will the acid spontaneously dissociate under these conditions? O no O yes Calculate the value of AGrxn for nitrous acid when [NO, ] = [H,O+] = 7.13 x 10- M and...
(a) Calculate ?G for the reaction: 2H,000 H()+OH (ag) at 25 C given the following initial concentrations. HO] 1.0x 10-12 M and (OH]- 20 x10* M (b) Predict the direction in which the reaction will proceed spontaneously to establish equilibrium. 10. The AG° for the reaction: N,(g)+3H,(g)0 2NH,(g) is 33.3 kJ/mol at 25°C. What is the value of Kp?
Given: C+++ (aq) +3e" = Cr(s);E°=-0.74V Ag+ (aq) +e Ag(s); E° = 0.80 V What is the cell potential at 25°C for the following cell? Cr(s) | Cr3+(0.010 M) || Ag+(0.00025 M) | Ag(s) a) 1.71 V b) 1.51 V O c) 0.95 V d) 2.09 V e) 1.37 V
Question 25 ***A 50 mL solution of 0.10 M HC2H2O2(aq) (Kg = 1.8 x 10-5) is titrated with 0.20 M NaOH (aq)** What is the pH after the addition of 5.0 mL of NaOH (aq)? 4.14 o 4.74 2.87 8.98 O 3.58 Previous
14. (20 pts total) Consider the following cell reaction at 25 o°C: 2 Al(s)3 Ni (aq)>2 A (aq) +3 Ni(s) Calculate the following: a. (10 pts) Under standard conditions, calculate the Gibbs Free Energy, AG , in J. (Standard reduction potentials are in the last page of the exam) b. (10 pts) At non-standard conditions, if the concentrations of Ni respectively, calculate the E, in V. Assume T 25 °C. and Al are 0.015 M and 0.010 M,
cace). The Ka for acetic acid. HCHO(ag) is 1.8 X 10 at 25°C Write the chemical reaction that chemical reaction that describes the dissociation of acetic acid. C2 1 2 0 2 (aq) + H3 1 C2 H 3 O 2 caq) + H 2 O (1) Given the following standard enthalpies of formation Substance AH® (kJ/mol) (T= 25°C) HC2H3O2(aq) -485.76 C2H302 (aq) -486.01 H(aq) Calculate the K, at 35 °C. Qualitatively, how would expect the pH of a solution...
The following reaction was studied experimentally at 25 °C. S2O82(aq) + 21'(ag) = 12(aq) + 2SO4 (aq) The reaction was found to be first order with respect to I and first order with respect to S208". A reaction was performed with [1] = 0.080 M and [S208²-] = 0.040 M. The initial rate of formation of 12 was found to be 1.25 x 10-M St. Provide an expression for the rate law for this reaction and determine the initial rate...
please help
7. (18 points) Consider the reaction: Nia (aq) +H.000) = OH(aq) + HNla(aq) K = 6.25x101 @25°C SHOW ALL WORK Note: HNia weak acid Niacin (COHON, one of the B vitamins) AG = A. (6 points) What is AG"(KI) for this reaction ſhow your work. --RTink B. (12 points) What are the equilibrium concentrations (M) of each species in a solution that was prepared by mixing 0.157 moles of HNia and 0.315 moles of Nia- in a 1.000...
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