Which can not function as a Bronsted-Lowry acid?
A - AQA - A-Level Chemistry - Question 13 - 2022 - Paper 3
Question 13
Which can not function as a Bronsted-Lowry acid?
A. CH₃COO⁻
B. HCO₂⁻
C. H₂O⁺
D. NH₄⁺
Worked Solution & Example Answer:Which can not function as a Bronsted-Lowry acid?
A - AQA - A-Level Chemistry - Question 13 - 2022 - Paper 3
A. CH₃COO⁻
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The acetate ion (CH₃COO⁻) is a conjugate base of acetic acid and cannot function as a Bronsted-Lowry acid since it does not donate protons.
B. HCO₂⁻
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The formate ion (HCO₂⁻) is the conjugate base of formic acid and thus does not act as a Bronsted-Lowry acid.
C. H₂O⁺
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The hydronium ion (H₂O⁺) can donate protons, making it able to function as a Bronsted-Lowry acid.
D. NH₄⁺
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The ammonium ion (NH₄⁺) can also donate protons, therefore it functions as a Bronsted-Lowry acid.
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