Ch.16 - Acids and Bases

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Tro 4th Edition

Ch.16 - Acids and Bases

문제 74b

Calculate the percent ionization of a formic acid solution having the given concentration. b. 0.500 M

문제 74c

Calculate the percent ionization of a formic acid solution having the given concentration. c. 0.100 M

문제 74d

Calculate the percent ionization of a formic acid solution having the given concentration. d. 0.0500 M

문제 75

A 0.148 M solution of a monoprotic acid has a percent ionization of 1.55%. Determine the acid ionization constant (K_a) for the acid.

문제 79a

Find the pH of each mixture of acids. a. 0.115 M in HBr and 0.125 M in HCHO₂

문제 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

문제 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

문제 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

문제 82a

For each strong base solution, determine [OH^–], [H₃O⁺], pH, and pOH. a. 8.77×10^–3 M LiOH

문제 82b

For each strong base solution, determine [OH^–], [H₃O⁺], pH, and pOH. b. 0.0112 M Ba(OH)₂

문제 82c

For each strong base solution, determine [OH^–], [H₃O⁺], pH, and pOH. c. 1.9×10^–4 M KOH

문제 82d

For each strong base solution, determine [OH^–], [H₃O⁺], pH, and pOH. d. 5.0×10^–4 M Ca(OH)₂

문제 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.

문제 84

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.

문제 85

What volume of 0.855 M KOH solution is required to make 3.55 L of a solution with a pH of 12.4?

문제 86

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?

문제 87

Write equations showing how each weak base ionizes water to form OH^–. Also write the corresponding expression for K_b. a. NH₃ b. HCO₃^– c. CH₃NH₂

문제 88a

Write equations showing how each weak base ionizes water to form OH^–. Also write the corresponding expression for K_b. a. CO₃^2–

문제 88b

Write equations showing how each weak base ionizes water to form OH^–. Also write the corresponding expression for K_b. b. C₆H₅NH₂

문제 88c

Write equations showing how each weak base ionizes water to form OH^–. Also write the corresponding expression for K_b. c. C₂H₅NH₂

문제 89

Determine the [OH^–], pH, and pOH of a 0.15 M ammonia solution.

문제 91

Caffeine (C₈H₁₀N₄O₂) is a weak base with a pK_b of 10.4. Calculate the pH of a solution containing a caffeine concentration of 455 mg/L.

문제 92

Amphetamine (C₉H₁₃N) is a weak base with a pK_b of 4.2. Calculate the pH of a solution containing an amphetamine concentration of 225 mg/L.

문제 93

Morphine is a weak base. A 0.150 M solution of morphine has a pH of 10.7. What is K_b for morphine?

문제 94

A 0.135 M solution of a weak base has a pH of 11.23. Determine Kb for the base.

문제 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^–

문제 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^–