Gr. 12 Acids and bases

Which of the following shows the correct conjugate acid base pair?

• HCI (acid) / H₃O⁺ (conjugate base)
• HCI (acid) / CI^- (conjugate base)
• HCI (base) / CI^- (conjugate acid)
• HCI (base) / H₃O⁺ (conjugate acid)

Which of the following shows the correct conjugate acid base pair?

• H₂O (base) / H₃O⁺ (conjugate acid)
• H₂O (acid) / CH₃COO^- (conjugate base)
• CH₃COOH (acid) / H₃O⁺ (conjugate base)
• CH₃COOH (base) / CH₃COO^- (conjugate acid)

Which of the following shows the correct conjugate acid base pair?

• SO₃^2-(base) / HSO₃^- (conjugate base)
• HPO₄^2- (acid) / HSO₃^-(conjugate base)
• SO₃^2-(acid) / HSO₃^- (conjugate base)
• HPO₄^2- (acid) / PO₄^3-(conjugate base)

An Arrhenius acid:

• donates H+ to another substance

• accepts H+ from another substance

• produces H+

• produces OH-

A hydrogen ion, H⁺, is the same as a(n):

• neutron
• electron
• proton
• hydroxide ion

A Bronsted Lowry base:

• donates H+ to another substance

• accepts H+ from another substance

• produces H+

• produces OH-

NH₃ + H₂O → NH₄⁺ + OH^-

NH₃ is a Bronsted Lowry

• Acid

• Base

• conjugate acid

• conjugate base

Which is the weakest acid?

• HF
• HNO₂
• CH₃COOH
• HClO

The pH at the equivalence point of the titration of a strong acid with a strong base is:

• 3.9
• 4.5
• 7.0
• 8.2

Calculate the [H⁺] in a solution that has a pH of 2.73.

• 5.4 x 10^-12 M
• 1.9 x 10^-3 M
• 2.7 M
• 11.3 M