Edexcel IAL Chemistry 5.6 Electrophilic addition mechanisms

Start the first arrow at the carbon–carbon pi bond, show bond fission and the charged intermediate, then direct a lone pair from the negative ion to the carbocation.

Exam points

Draw curly arrows from the alkene pi bond to an electrophile and from the broken bond.
Show carbocation intermediates, charges, dipoles and nucleophile lone-pair attack.
Explain major products through the relative stability of possible carbocations.

[Maximum number: 2]

This question is about 2-Chloropropane.

Figure for Question 5.6—The mechanism (including diagrams), giving evidence where possible, of: i the electrophilic addition of bromine and hydrogen question 1 — Edexcel A-Level Chemistry AS

2-Chloropropane can also be produced from the reaction of propene with hydrogen chloride.

Explain why only a small amount of 1-chloropropane is produced in this reaction.

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5.6—The mechanism (including diagrams), giving evidence where possible, of: i the electrophilic addition of bromine and hydrogen question 1