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CAIE A-Level Chemistry AS 15.1.4 Elimination Reaction with Naoh in Ethanol Questions

Practise CAIE 9701 elimination of HX from halogenoalkanes using hot ethanolic hydroxide, including product isomers and equations.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • choose hot ethanolic NaOH or KOH and reflux to favour elimination over substitution
  • remove a beta hydrogen and the halogen to form a C=C, showing the elimination mechanism
  • predict all structural and stereoisomeric alkene products and balance the equation with water and halide

CAIE A-Level Chemistry AS 15.1.4 Elimination Reaction with Naoh in Ethanol Questions question 1

[Maximum number: 2]

Fig. 4.1 shows a possible synthesis of propene, C3H6\mathrm{C}_{3} \mathrm{H}_{6}.

Fig. 4.1

Fig. 4.1

Reaction 3 is an elimination reaction.

Write an equation for this reaction and identify the solvent and conditions used. equation solvent and conditions

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