Which one of the following acids has a strong conjugate base?
Correct answer: A. CH₃COOH
- A. CH₃COOH
- B. HCl
- C. HNO₃
- D. H₂SO₄
Explanation
There is an inverse relationship between the strength of an acid and its conjugate base. A weak acid will have a strong conjugate base. Since acetic acid (CH₃COOH) is a weak acid, its conjugate base (CH₃COO⁻) is relatively strong.
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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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