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Aromatic compounds

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Question 5

Which of the following statement(s) provide(s) evidence for the delocalised model of benzene rather than the Kekulé structure?

  1. The enthalpy change of hydrogenation of benzene is less exothermic than predicted for cyclohexa-1,3,5-triene.
  2. Benzene undergoes electrophilic substitution reactions instead of electrophilic addition.
  3. All carbon-carbon bond lengths in benzene are identical and intermediate between a single and double bond.
A

1, 2 and 3

B

Only 1 and 2

C

Only 2 and 3

D

Only 3

Markscheme

Aromatic compounds Questions

  1. A Level
  2. /Chemistry
  3. /Aromatic compounds

14 exam-style questions on OCR A A Level Chemistry Aromatic compounds. Each one has a worked solution and a mark scheme showing where the marks go.

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