Conjugate Acid-Base Pairs Worksheet
Explore the concepts of conjugate acids and bases, their definitions, and identification in chemical reactions.
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Conjugate Acid-Base Pairs
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. According to the Brønsted-Lowry theory, an acid is a substance that:
Accepts a proton
Donates a proton
Produces hydroxide ions
Produces hydrogen ions
2. What is the conjugate base of H₂SO₄?
SO₄²⁻
HSO₄⁻
H₃SO₄⁺
H₂SO₃
1. A conjugate acid is formed when a Brønsted-Lowry base a proton.
2. In the reaction HCl + H₂O ⇌ H₃O⁺ + Cl⁻, HCl is the acid and Cl⁻ is its .
3. An amphoteric substance can act as both an acid and a .
1. Define a conjugate acid-base pair.
2. Identify the conjugate acid-base pairs in the following reaction:
NH₃ + H₂O ⇌ NH₄⁺ + OH⁻
1. Every acid has a conjugate base.
True
False
2. H₂O can only act as a Brønsted-Lowry acid.
True
False
Match the acid with its conjugate base.
1. HNO₃
a. CO₃²⁻
2. H₂CO₃
b. NO₃⁻
3. CH₃COOH
c. CH₃COO⁻