The strongest conjugate base is:
Correct answer: D. CH₃COO⁻
- A. NO₃⁻
- B. Cl⁻
- C. SO₄ ²⁻
- D. CH₃COO⁻
Explanation
The strength of a conjugate base is inversely related to the strength of its acid. Since acetic acid (CH₃COOH) is the weakest acid among the choices, its conjugate base, the acetate ion (CH₃COO⁻), is the strongest.
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About Acids, Bases and Salts
Acid and base behaviour is explained through the Bronsted-Lowry transfer of protons and the Lewis donation or acceptance of electron pairs. The topic includes pH, pOH, ionisation and water equilibrium, plus salt formation and hydrolysis, where a salt solution may become acidic, basic or neutral.
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