Problema 74b
Calculate the percent ionization of a formic acid solution having the given concentration. b. 0.500 M
Problema 74c
Calculate the percent ionization of a formic acid solution having the given concentration. c. 0.100 M
Problema 74d
Calculate the percent ionization of a formic acid solution having the given concentration. d. 0.0500 M
Problema 75
A 0.148 M solution of a monoprotic acid has a percent ionization of 1.55%. Determine the acid ionization constant (Ka) for the acid.
- A 0.085 M solution of a monoprotic acid has a percent ionization of 0.59%. Determine the acid ionization constant (Ka) for the acid.
Problema 76
- Find the pH and percent ionization of each HF solution. (Ka for HF is 6.8 * 10^-4.) a. 0.250 M HF b. 0.100 M HF c. 0.050 M HF.
Problema 77
- Find the pH and percent ionization of a 0.100 M solution of a weak monoprotic acid given the following Ka values: a. Ka = 1.0 * 10^-5, b. Ka = 1.0 * 10^-3, c. Ka = 1.0 * 10^-1.
Problema 78
Problema 79a
Find the pH of each mixture of acids. a. 0.115 M in HBr and 0.125 M in HCHO2
Problema 79b,c,d
Find the pH of each mixture of acids. b. 0.150 M in HNO2 and 0.085 M in HNO3 c. 0.185 M in HCHO2 and 0.225 M in HC2H3O2 d. 0.050 M in acetic acid and 0.050 M in hydrocyanic acid
Problema 80
Find the pH of each mixture of acids. a. 0.075 M in HNO3 and 0.175 M in HC7H5O2 b. 0.020 M in HBr and 0.015 M in HClO4 c. 0.095 M in HF and 0.225 M in HC6H5O d. 0.100 M in formic acid and 0.050 M in hypochlorous acid
Problema 81
For each strong base solution, determine [OH–], [H3O+], pH, and pOH. a. 0.15 M NaOH b. 1.5×10–3 M Ca(OH)2 c. 4.8×10–4 M Sr(OH)2 d. 8.7×10–5 M KOH
Problema 82a
For each strong base solution, determine [OH–], [H3O+], pH, and pOH. a. 8.77×10–3 M LiOH
Problema 82b
For each strong base solution, determine [OH–], [H3O+], pH, and pOH. b. 0.0112 M Ba(OH)2
Problema 82c
For each strong base solution, determine [OH–], [H3O+], pH, and pOH. c. 1.9×10–4 M KOH
Problema 82d
For each strong base solution, determine [OH–], [H3O+], pH, and pOH. d. 5.0×10–4 M Ca(OH)2
Problema 83
Determine the pH of a solution that is 3.85% KOH by mass. Assume that the solution has density of 1.01 g/mL.
- Determine the pH of a solution that is 1.55% NaOH by mass. Assume that the solution has a density of 1.01 g/mL.
Problema 84
- What volume of 0.855 M KOH solution is required to make 3.55 L of a solution with a pH of 12.4?
Problema 85
- What volume of a 15.0% by mass NaOH solution, which has a density of 1.116 g/mL, should be used to make 5.00 L of an NaOH solution with a pH of 10.8?
Problema 86
Problema 87
Write equations showing how each weak base ionizes water to form OH–. Also write the corresponding expression for Kb. a. NH3 b. HCO3– c. CH3NH2
Problema 88a
Write equations showing how each weak base ionizes water to form OH–. Also write the corresponding expression for Kb. a. CO32–
Problema 88b
Write equations showing how each weak base ionizes water to form OH–. Also write the corresponding expression for Kb. b. C6H5NH2
Problema 88c
Write equations showing how each weak base ionizes water to form OH–. Also write the corresponding expression for Kb. c. C2H5NH2
Problema 89
Determine the [OH–], pH, and pOH of a 0.15 M ammonia solution.
Problema 91
Caffeine (C8H10N4O2) is a weak base with a pKb of 10.4. Calculate the pH of a solution containing a caffeine concentration of 455 mg/L.
Problema 92
Amphetamine (C9H13N) is a weak base with a pKb of 4.2. Calculate the pH of a solution containing an amphetamine concentration of 225 mg/L.
Problema 93
Morphine is a weak base. A 0.150 M solution of morphine has a pH of 10.7. What is Kb for morphine?
- A 0.135 M solution of a weak base has a pH of 11.23. Determine Kb for the base.
Problema 94
Problema 95
Determine if each anion acts as a weak base in solution. For those anions that are basic, write an equation that shows how the anion acts as a base. a. Br– b. ClO– c. CN– d. Cl–
Problema 96a,b,d
Determine whether each anion is basic or neutral. For those anions that are basic, write an equation that shows how the anion acts as a base. a. C7H5O2– b. I– d. F–
Ch.16 - Acids and Bases
