A-LevelChemistryHalogen derivativesMay/June 2018Paper 1 Q251 Mark
When warm water is added to halogenoalkane X, an SN1 reaction occurs. AgNO3(aq) is then added; a yellow precipitate is formed. What could be X?
A1-chlorobutane
B1-iodobutane
C2-chloro-2-methylpropane
D2-iodo-2-methylpropane
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of halogen derivatives 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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