AQA A-Level Chemistry - Aromatic
Chemistry Questions and Answers
Benzene – answer An unsaturated carbon ring, with delocalised electrons in the centre,
which cannot undergo addition reactions
152 – answer Benzene is more stable than cyclohexene by a certain enthalpy change
Electrophilic Substitution – answer The mechanism to add a different R group to a
benzene ring. This is the main type of reaction that occurs as the benzene ring is an
area of high electron density so requires like charge displacement. The ring is also very
stable so the reaction has to be of a high energy to destabilise the ring
Nitration – answer The substitution of NO2 for one of the H on a benzene rings
TNT – answer Main use of a specific nitrated arene
Friedel-Crafts Acylation - answerThe substitution mechanism catalysed by AlCl3. Which
reforms at the end of the reaction
Chemistry Questions and Answers
Benzene – answer An unsaturated carbon ring, with delocalised electrons in the centre,
which cannot undergo addition reactions
152 – answer Benzene is more stable than cyclohexene by a certain enthalpy change
Electrophilic Substitution – answer The mechanism to add a different R group to a
benzene ring. This is the main type of reaction that occurs as the benzene ring is an
area of high electron density so requires like charge displacement. The ring is also very
stable so the reaction has to be of a high energy to destabilise the ring
Nitration – answer The substitution of NO2 for one of the H on a benzene rings
TNT – answer Main use of a specific nitrated arene
Friedel-Crafts Acylation - answerThe substitution mechanism catalysed by AlCl3. Which
reforms at the end of the reaction
