ACID/BASE TITRATIONS and pH

Topics & Terms

• pH
• Ionization/Dissociation
• Acid, Base, Salt, Neutralization
• Ionization Constant (Ka, Kb, Kw)

Problem 1

What is the hydrogen ion concentration [H⁺] of a 0.10 M HCl solution?

(a) 0.10 M
(b) 0.050 M
(c) 1.3 x 10^-3 M

Problem 2

What is the pH of a 0.10 M HCl solution?

(a) pH = 1.00
(b) pH = -1.00
(c) pH = 0.10

Problem 3

What is the hydrogen ion concentration [H⁺] of a 0.10 M acetic acid? (Hint look up the Ka of acetic acid)

(a) 0.10 M
(b) 0.050 M
(c) 1.3 x 10^-3 M

Problem 4

What is the pH of a 0.10 M acetic acid?

(a) pH = 0.10
(b) pH = 1.00
(c) pH = 2.89

Problem 5

What is the hydrogen ion concentration [H⁺] of a solution containing both 0.10 M HCl and 0.10 M acetic acid?

(a) 1.8 x 10^-5
(b) 0.10 M
(c) 0.20 M

Problem 6

What is the pH of a solution containing both 0.10 M HCl and 0.10 M acetic acid?

(a) pH = 1.00
(b) pH = 4.70
(c) pH = 0.70

Problem 7

What is the hydrogen ion concentration [H⁺] of a 0.10 M H₂SO₄ solution?

(a) 0.010 M
(b) 0.11 M
(c) 0.10 M
(d) 0.20 M
(e) 0.112M

Problem 8

What is the pH of a 0.10 M NaHSO₄ solution?

(a) pH = 1.54
(b) pH = 1.00
(c) pH = 0.10
(d) pH = 1.46

Problem 9

What is the pH of a 0.10 M Na₂SO₄ solution?

(a) pH = 7.46
(b) pH = 6.54
(c) pH = 12.54
(d) pH = 7.39