Acids & Bases Review

The conjugate base of HSO₄^–

• H₂SO₄

• SO₄^2–

• H₃SO₄⁺

• HSO₄⁺

• OH^–

The conjugate acid of HSO₄^– is

• H⁺

• H₂SO₄

• HSO₄⁺

• SO₄^2–

• HSO₃⁺

The molar concentration of hydronium ion in pure water at 25°C is __________.

• 7.00

• 1.0 x 10^–7

• 1.00

• 1.0 x 10^–14

• 0.00

The molar concentration of hydroxide ion in pure water at 25°C is __________.

• 1.00

• 1.0 x 10^–14

• 1.0 x 10^–7

• 0.00

• 7.00

What is the pH of an aqueous solution at 25°C in which [OH^–] is 0.0025 M?

• +2.60

• –2.60

• +11.40

• –11.40

• –2.25

What is the pH of an aqueous solution at 25°C that contains 3.98 x 10^–9 M hydronium ion?

• 7.000

• 9.000

• 8.400

• 5.600

• 3.980

What is the concentration (in M) of hydronium ions in a solution at 25°C with pH = 4.282?

• 4.28

• 1.92 x 10^–10

• 1.66 x 10⁴

• 9.71

• 5.22 x 10^–5

Which solution below has the highest concentration of hydroxide ions?

• pH = 3.21

• pH = 9.82

• pH = 7.93

• pH = 12.59

• pH = 7.00

What is the pH of a 0.015-M aqueous solution of barium hydroxide?

• 12.18

• 1.52

• 12.48

• 1.82

• 10.35

Sodium hydroxide is a strong base. This means that __________.

• aqueous solutions of NaOH contain equal concentrations of H⁺(aq) and OH^–(aq)

• NaOH does not dissociate at all when it is dissolved in water

• NaOH dissociates completely to Na⁺(aq) and OH^–(aq) when it dissolves in water

• NaOH cannot be neutralized by a weak acid

• NaOH cannot be neutralized by ordinary means