According to the Bronsted-Lowry concept, which of the following species cannot function as an acid?
Correct answer: A. SO₄ ²⁻
- A. SO₄ ²⁻
- B. H₃O⁺
- C. HSO₄⁻
- D. NH₄⁺
Explanation
A Bronsted-Lowry acid is a proton (H⁺) donor. The sulfate ion (SO₄²⁻) does not have any protons to donate, so it cannot function as a Bronsted-Lowry acid.
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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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