A-LevelChemistryChemical bonding9701/12 · May/June 2013 · Q171 Mark

Which statement about ammonia is completely correct?

AAmmonia acts as a nucleophile by accepting a pair of electrons when it reacts with bromoethane.

BAmmonia can form a co-ordinate bond with a hydrogen ion to form an ammonium ion.

CAmmonia is a base and accepts hydroxide ions.

DThe shape of the ammonia molecule is pyramidal with bond angles of 109.5°.

✓ Correct answer

B: Ammonia can form a co-ordinate bond with a hydrogen ion to form an ammonium ion.

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Topic: Chemical bonding, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2013 Paper 1 Variant 2, question 17.

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