CourseCourseConceptConceptDocsDocuments

CAIE A-Level Chemistry AS 14.2.4 Mechanism Electrophilic Addition in Alkenes Questions

Practise CAIE 9701 electrophilic addition mechanisms for alkenes, including dipoles, curly arrows, intermediates and products.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • show the alkene π bond attacking the electrophile with a correctly oriented curly arrow
  • draw the polarised reagent, carbocation or cyclic intermediate, charges and lone pairs accurately
  • complete nucleophile attack to form the major addition product and name the electrophilic-addition mechanism

CAIE A-Level Chemistry AS 14.2.4 Mechanism Electrophilic Addition in Alkenes Questions question 1

[Maximum number: 1]

The halogens chlorine, bromine and iodine show trends in chemical and physical properties down the group.

Table 3.1 shows some properties of chlorine, bromine and iodine.

Table 3.1

Table 3.1

Iodine monobromide, IBr , is a dark red solid that melts near room temperature.

IBr reacts with propene. The mechanism for this reaction is the same as the mechanism for that of HBr with propene.

Name the mechanism involved in the reaction of IBr with propene.

All question bank results loaded