Conjugate Acids and Bases

Which of the following correctly defines a Brønsted-Lowry acid?

• A substance that donates an electron pair

• A substance that donates a proton

• A substance that produces OH⁻ in solution

• A substance that dissolves completely in water

Identify the conjugate base in the following reaction: HNO₂ + H₂O ⇌ NO₂⁻ + H₃O⁺

• HNO₂

• H₂O

• NO₂⁻

• H₃O⁺

What is the conjugate acid of NH₃?

• NH₂⁻

• NH₄⁺

• NH₃

• OH⁻

Which of the following acids is considered strong?

• HF

• H₂CO₃

• HClO₄

• CH₃COOH

What happens to a strong acid when it dissolves in water?

• It partially ionizes into H₃O⁺ and its conjugate base

• It remains mostly in molecular form

• It completely ionizes into H₃O⁺ and its conjugate base

• It produces OH⁻ ions in solution

What happens when a strong acid is dissolved in water?

• It partially ionizes into H3O+ and its conjugate base

• It does not ionize at all

• It completely ionizes into H3O+ and its conjugate base

• It forms a precipitate.

Tags

NGSS.HS-PS1-5