A-LevelChemistryEquilibriaOct/Nov 2016Paper 1 Q191 Mark
Water and ammonia take part in a reaction that produces the ammonium ion. Which statement about this reaction is correct?
ANeither the ammonia molecule nor the ammonium ion has a dipole moment.
BThe bond angle changes from 109.5° in the ammonia molecule to 107° in the ammonium ion.
CThe reaction is a redox reaction.
DThe water is acting as an acid.
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of equilibria within the Chemistrysyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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