10. Given the pH of 1.5 M chloroacetic acid, CH2CICOOH solution is 1.96. a. Write an equation to show the dissociation of CH2CICOOH in water. b. Calculate the Ka of the acid. c. Calculate the pKb of its conjugate base. d. Which is a stronger base, acetate ion or the conjugate base of CH2CICOOH? (Ka of acetic acid, CH3COOH = 1.8 x 10-5) %3D

10. Given the pH of 1.5 M chloroacetic acid, CH2CICOOH solution is 1.96. a. Write an equation to show the dissociation of CH2CICOOH in water. b. Calculate the Ka of the acid. c. Calculate the pKb of its conjugate base. d. Which is a stronger base, acetate ion or the conjugate base of CH2CICOOH? (Ka of acetic acid, CH3COOH = 1.8 x 10-5) %3D

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter14: Acids And Bases

Section: Chapter Questions

Problem 38QRT

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10. Given the pH of 1.5 M chloroacetic acid, CH2CICOOH solution is 1.96. a. Write an equation to show the dissociation of CH2CICOOH in water. b. Calculate the Ka of the acid. c. Calculate the pKb of its conjugate base. d. Which is a stronger base, acetate ion or the conjugate base of CH2CICOOH? (Ka of acetic acid, CH3COOH = 1.8 x 105)
7. Determine the K₁ of each of the following. a. A 0.00475 M solution of acid HY has a pH of 2.68. What is the Ka of HY? b. CICH₂COOH has a pKa of 2.87, what is the Ka of the acid? c. A base has a pKb of 5.14, what is the Ka of the conjugate acid? d. A 0.25 M solution of a weak acid is 3% dissociated, what is the Ka of the acid?
Use the following information to answer the next question. Ka 1 x 10-14 1.1 x 10-7 1.7 x 10-4 Acid H₂0 (1) H₂S (aq) H₂Se (aq) The predicted Ka value of H₂Te (aq) would be... Select one: A. greater than the K, for H₂O but less than the Ka for H₂S (aq) ⒸB. greater than the Ka for H₂S(aq) but less than the K, for H₂Se (aq) OC. less than the Ka for H₂O( OD. greater than the Ka for H₂Se (aq)
Nitric acid (HNO3) is a strong acid that completely ionizes when dissolved in water (pKa = -1.30). Calculate the pH of 10 mg/L HNO3. a. Unlike nitric acid, butyric acid (CH3CH2CH2COOH) is a weak acid (pKa = 4.8). Calculate the pH of a solution when 90% of the CH3CH2CH2COOH is dissociated. b. Briefly explain how you can use the pKa values of these two molecules to determine that nitric acid is a strong acid, while butyric acid is a weak acid.
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dentify the conjugate base in the reaction of propanoic acid CH3CH3COOH reacting with methyl amine, CH3NH2. a. CH3NH2 b. CH3CH3COOH c. CH3NH3+ d. OH-1 e. CH3CH3COO-1
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What is the conjugate of PO4 -3? A. conjugate acid B. conjugate base C. acid D. base
A carboxylic acid has a pKa of 6.00. Which of the following statements is true? O A. There is an equimolar ratio of the acid and its conjugate base when the pH is 6.00. B. Half of the acid will be deprotonated when the pH = 3. O C. Half of the acid will be protonated when the pH = 12. D. The acid will be completely neutralized when the pH = 7.00. %3!
Sodium benzoate is a salt of benzoic acid, C6H5COOH. A 0.15 M solution of this salt has a pOH a 5.31 at room temperature. A. Calculate the value for the equilibrium constant for the reaction: C6 H5COO- + H2O C6H5COOH + OH B. What is the Ka value for benzoic acid ? C. Benzoic acid has a low solubility in water. What is its molar solubility if a saturated solution has a pH of 2.83 at room temperature?
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Explain why the pH of 0.1 M acetic acid (pH = 4) is higher than the pH of 0.1 M trifluoroacetic acid (pH 1). Draw structures to help you explain. =