The species which can act both as Bronsted-Lowery acid & base is
Correct answer: D. All of these
- A. HCO₃⁻
- B. HSO₄⁻
- C. H₂O
- D. All of these
Explanation
Correct Answer: All of them - HCO₃⁻, HSO₄⁻, and H₂O - can act as both Brønsted-Lowry acids and bases.
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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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