Homework Answers
![We know pka = -log, (ka) Ka = 1.77x104 pka = -logo (1.77x104) = -logy 0%) + log..77)] F-* 10%,(46) = legat logb 7 =-54+0.248]](http://img.homeworklib.com/questions/e5e112e0-a010-11ea-8be3-3163f8c361a6.png?x-oss-process=image/resize,w_560)
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question 3.28 (NOT 2.29)
3.28 3.29 (a) The K, of formic acid (HCOH) is 1.77 X...
A buffer is composed of formic acid and its conjugate base, the formate ion. K, for...
A buffer is composed of formic acid and its conjugate base, the formate ion. K, for formic acid is 1.8 x 10- a What is the pH of a solution that has a formic acid concentration of 0.020 M and a sodium formate concentration of 0.055 M? pH = 4.18 Correct pK, = - log(1.8 x 10^4) = 3.74 We use the Henderson-Hasselbalch equation to calculate the pH of a buffer solution. (HCO3 pH=pk.vlog HCO, = 3.74 +log 0.055 020...
At 25°C the Ka of formic acid (HCO2H) is 1.77 x 10−4. Calculate the ΔG° (in...
At 25°C the Ka of formic acid (HCO2H) is 1.77 x 10−4. Calculate the ΔG° (in kJ/mol) for the ionization of formic acid in water? a. 4.63 b. 25.7 c. 1.77 x 10-4 d. 21.4 e. 3.75
Please answer question 20,22,29,31,32,35,36 Please answer all of the sub-question in 20,22,29,31,32,35,36? Thank you very much??...
Please answer question 20,22,29,31,32,35,36
Please answer all of the sub-question in
20,22,29,31,32,35,36?
Thank you very much??
3.20 What is the conjugate base of each of the following acids? (a) NH3 b) H2O (c) H2 (d) HC CH (e) CHJOH (f) HJ0* you gave as answers to Problem 3.20 in order of decreasing basicity 3.22 What is the conjugate acid of each of the following bases? (a) HSO4 (c) CH3NH2 (d) NH2 (e) CH30% ( CH,CO2 (b) H20 3.29 Write an...
K, for hydrofluoric acid, HF, is 7.20 x 10-4 K, for formic acid, HCOOH, is 1.80...
K, for hydrofluoric acid, HF, is 7.20 x 10-4 K, for formic acid, HCOOH, is 1.80 x 10-4. K, for acetic acid, CH3COOH, is 1.80 x 10-5 What is the formula for the weakest acid? Drag and drop your selection from the following list to complete the answer: CH3COOH HF HCOOH
Question 4 2 pts If 11 drops of a formic acid (HCOOH) solution are titrated with 10 drops of a 0.12 M NaOH solution, what is the percent ionization of the formic acid solution? (Ka for formic aci...
Question 4 2 pts If 11 drops of a formic acid (HCOOH) solution are titrated with 10 drops of a 0.12 M NaOH solution, what is the percent ionization of the formic acid solution? (Ka for formic acid 1.78 x 104) 4.0% 1.3% 1.9% @ 2.5% Question 5 2 pts What is the pH of an acetic acid solution if 25 drops are titrated with 44 drops of a 0.45 M KOH solution? (K, for acetic acid 1.8 x 105)...
3) (10 points total) A 25.0-mL sample of 0.35 M HCOOH (formic acid) is titrated with...
3) (10 points total) A 25.0-mL sample of 0.35 M HCOOH (formic acid) is titrated with 0.20 M KOH. What is the pH of the solution after 25.0 mL of KOH has been added to the acid? Ka-1.77 x 10 a) (4 points) What is the pH of the solution after 25.0 mL of KOH has been added to the acid? Ks-1.77 x 10 C 2-l04Co1s5 b) (6 points) Calculate at least nine (9) more titration points, build a table...
69. A solution of formic acid (HCOOH, K, = 1.8 X 10^4) has a pH of 2.70. Calculate the initial concentration of for...
69. A solution of formic acid (HCOOH, K, = 1.8 X 10^4) has a pH of 2.70. Calculate the initial concentration of formic acid in this solution.
A buffer is composed of formic acid and its conjugate base, the formate ion. K for...
A buffer is composed of formic acid and its conjugate base, the formate ion. K for formic acid is 1.8 x 10. a What is the pH of a solution that has a formic acid concentration of 0.020 M and a sodium formate concentration of 0.055 M? pH
A solution of 7.95 M formic acid (HCOOH) is 0.47% ionized. what is the K, value...
A solution of 7.95 M formic acid (HCOOH) is 0.47% ionized. what is the K, value of formic acid? 1.8 x 10-4 3.7 3.7 x 10-2 more data is needed 4.7 x 10-
to 21. In the laboratory, you are asked to recommends using oxalic acid (K = 5.374...
to 21. In the laboratory, you are asked to recommends using oxalic acid (K = 5.374 your laboratory partner? you are asked to prepare a buffer at pH 5. Your laboratory partner alic acid (K. = 5.37 x 10") and it salt. What do you recommend to 22. Formic acid (HCOOH) is a monoprotic acid. Is formic acid a weak acid or strong acid? How do you know The K. value of formic acid is 1.78 x 10. What is...
A buffer is composed of formic acid and its conjugate base, the formate ion. K, for formic acid is 1.8 x 10- a What is the pH of a solution that has a formic acid concentration of 0.020 M and a sodium formate concentration of 0.055 M? pH = 4.18 Correct pK, = - log(1.8 x 10^4) = 3.74 We use the Henderson-Hasselbalch equation to calculate the pH of a buffer solution. (HCO3 pH=pk.vlog HCO, = 3.74 +log 0.055 020...
Please answer question 20,22,29,31,32,35,36
Please answer all of the sub-question in
20,22,29,31,32,35,36?
Thank you very much??
3.20 What is the conjugate base of each of the following acids? (a) NH3 b) H2O (c) H2 (d) HC CH (e) CHJOH (f) HJ0* you gave as answers to Problem 3.20 in order of decreasing basicity 3.22 What is the conjugate acid of each of the following bases? (a) HSO4 (c) CH3NH2 (d) NH2 (e) CH30% ( CH,CO2 (b) H20 3.29 Write an...
K, for hydrofluoric acid, HF, is 7.20 x 10-4 K, for formic acid, HCOOH, is 1.80 x 10-4. K, for acetic acid, CH3COOH, is 1.80 x 10-5 What is the formula for the weakest acid? Drag and drop your selection from the following list to complete the answer: CH3COOH HF HCOOH
Question 4 2 pts If 11 drops of a formic acid (HCOOH) solution are titrated with 10 drops of a 0.12 M NaOH solution, what is the percent ionization of the formic acid solution? (Ka for formic acid 1.78 x 104) 4.0% 1.3% 1.9% @ 2.5% Question 5 2 pts What is the pH of an acetic acid solution if 25 drops are titrated with 44 drops of a 0.45 M KOH solution? (K, for acetic acid 1.8 x 105)...
3) (10 points total) A 25.0-mL sample of 0.35 M HCOOH (formic acid) is titrated with 0.20 M KOH. What is the pH of the solution after 25.0 mL of KOH has been added to the acid? Ka-1.77 x 10 a) (4 points) What is the pH of the solution after 25.0 mL of KOH has been added to the acid? Ks-1.77 x 10 C 2-l04Co1s5 b) (6 points) Calculate at least nine (9) more titration points, build a table...
69. A solution of formic acid (HCOOH, K, = 1.8 X 10^4) has a pH of 2.70. Calculate the initial concentration of formic acid in this solution.
A buffer is composed of formic acid and its conjugate base, the formate ion. K for formic acid is 1.8 x 10. a What is the pH of a solution that has a formic acid concentration of 0.020 M and a sodium formate concentration of 0.055 M? pH
A solution of 7.95 M formic acid (HCOOH) is 0.47% ionized. what is the K, value of formic acid? 1.8 x 10-4 3.7 3.7 x 10-2 more data is needed 4.7 x 10-
to 21. In the laboratory, you are asked to recommends using oxalic acid (K = 5.374 your laboratory partner? you are asked to prepare a buffer at pH 5. Your laboratory partner alic acid (K. = 5.37 x 10") and it salt. What do you recommend to 22. Formic acid (HCOOH) is a monoprotic acid. Is formic acid a weak acid or strong acid? How do you know The K. value of formic acid is 1.78 x 10. What is...
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