A-LevelChemistryHalogen derivatives9701/12 · May/June 2021 · Q241 Mark
A few drops of 2-bromopropane were placed in a test-tube. An equal volume of aqueous silver nitrate was added. A precipitate was formed. The experiment was repeated with 2-iodopropane. Which row is correct?
Acolour of precipitate from 2-bromopropane + AgNO₃(aq): cream, faster rate of reaction: 2-bromopropane + AgNO₃(aq)
Bcolour of precipitate from 2-bromopropane + AgNO₃(aq): yellow, faster rate of reaction: 2-bromopropane + AgNO₃(aq)
Ccolour of precipitate from 2-bromopropane + AgNO₃(aq): cream, faster rate of reaction: 2-iodopropane + AgNO₃(aq)
Dcolour of precipitate from 2-bromopropane + AgNO₃(aq): yellow, faster rate of reaction: 2-iodopropane + AgNO₃(aq)
✓ Correct answer
C: colour of precipitate from 2-bromopropane + AgNO₃(aq): cream, faster rate of reaction: 2-iodopropane + AgNO₃(aq)
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