A-LevelChemistryChemical bonding9701/12 · Oct/Nov 2023 · Q51 Mark

Ammonium ions, NH4⁺, are formed when ammonia gas reacts with hydrogen chloride gas. Which statement about the changes that occur in this reaction is correct?

AThe dipole moment of an ammonium ion is greater than the dipole moment of an ammonia molecule.

BThe H-N-H bond angle decreases when an ammonium ion is formed.

CThe hybridisation of nitrogen does not change.

DThere is electron transfer from nitrogen to chlorine.

✓ Correct answer

C: The hybridisation of nitrogen does not change.

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Topic: Chemical bonding, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2023 Paper 1 Variant 2, question 5.

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