A-LevelChemistryChemical bonding9701/12 · May/June 2024 · Q221 Mark

Which statement describes a property of an ammonium ion?

AAn aqueous ammonium ion is a weak Brønsted–Lowry base.

BAqueous ammonium sulfate reacts with dilute hydrochloric acid to make ammonia gas.

CAn ammonium ion has a pyramidal shape with an H–N–H bond angle of 107°.

DThe four N–H covalent bonds in an ammonium ion are identical to each other.

✓ Correct answer

D: The four N–H covalent bonds in an ammonium ion are identical to each other.

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Topic: Chemical bonding, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2024 Paper 1 Variant 2, question 22.

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