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A-LevelChemistryEquilibria9701/12 · Feb/Mar 2021 · Q91 Mark

In which reaction is water behaving as a Brønsted-Lowry base?

AH₂O + Na → NaOH + ½H₂
BH₂O + H₃PO₄ → H₃O⁺ + H₂PO₄⁻
CH₂O + CaO → Ca(OH)₂
DNH₃ + [Cu(H₂O)₆]²⁺ → NH₄⁺ + [Cu(H₂O)₅(OH)]⁺

✓ Correct answer

B: H₂O + H₃PO₄ → H₃O⁺ + H₂PO₄⁻

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About this question

Topic
Equilibria, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source
A-Level Chemistry, Feb/Mar 2021 Paper 1 Variant 2, question 9.

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