Acid and Base IB SL

Which is the conjugate base of ammonia, NH₃? 

• NH2-

• NH4OH

• NH4NO3

• NH4+

What is the pH of 0.010 mol dm⁻³ H₂SO₄(aq)? 

• between 1 and 2

• Between 2 and 3

• 1

• 2

Which oxide cannot be a cause of acid deposition? 

• CO₂

• NO₂

• SO₂

• SO₃

What will be the pH of a solution made by adding 90 cm³ of water to 10 cm³ of an aqueous solution of a strong base with a pH of 12?

• 14

• 10

• 12

• 11

Hydrogen chloride gas dissolves in water to form hydrochloric acid.

HCl(g) + H₂O(l) → H₃O⁺(aq) + Cl⁻(aq)

What is the role of the water?

• It is only acting as a base

• It is only acting as a solvent

• It is acting as an acid and a base and a solvent

• It is acting as a base and a solvent

Which is the conjugate base of the hydroxide ion?

• H₃O⁺

• H⁺

• O²⁻

• H₂O

Which will react with hydrochloric acid?

• NaNO₃(aq)

• Na₂SO₄

• NaHCO₃

• NaHSO₄(aq)

Which describes the relative properties when 0.50 mol dm⁻³ aqueous solutions of hydrochloric acid and ethanoic acid are compared? 

• A

• B

• C

• D

Which 1.0 mol dm⁻³ solution will have the highest pH?

• KCl(aq)

• NH₄Cl(aq)

• CH₃COOH(aq)

• Na₂CO₃(aq)

Which species can act as a Lewis acid?

• Cl⁻

• Cl₂

• AlCl₃

• CCl₄