Week 2 © Pearson Education Ltd 2009 This document may have been altered from the original Explain the relative resistance to bromination of benzene compared with alkenes.

Week 2 © Pearson Education Ltd 2009 This document may have been altered from the original Reaction of cyclohexene with bromine

Week 2 © Pearson Education Ltd 2009 This document may have been altered from the original A double bond in cyclohexene induces a dipole in a bromine molecule

Week 2 © Pearson Education Ltd 2009 This document may have been altered from the original Electrophilic addition in cyclohexene

Week 2 © Pearson Education Ltd 2009 This document may have been altered from the original Structure of a PCB

Week 2 © Pearson Education Ltd 2009 This document may have been altered from the original Describe the reactions of phenol with aqueous alkalis and with sodium to form salts. Discuss the role of phenol as an early antiseptic.

Week 2 © Pearson Education Ltd 2009 This document may have been altered from the original Phenols must have an –OH group attached directly to a benzene ring

Week 2 © Pearson Education Ltd 2009 This document may have been altered from the original Phenol forms a phenoxide on reaction with sodium hydroxide

Week 2 © Pearson Education Ltd 2009 This document may have been altered from the original Phenol reacts with sodium producing hydrogen gas

Week 2 © Pearson Education Ltd 2009 This document may have been altered from the original Describe the reaction of phenol with bromine to form 2,4,6-tribromophenol. Explain the relative ease of bromination of phenol compared with benzene. State the uses of phenols in plastics, antiseptics, disinfectants and paints.

Week 2 © Pearson Education Ltd 2009 This document may have been altered from the original Bromine reacts with aqueous phenol to produce 2,4,6-tribromophenol

Week 2 © Pearson Education Ltd 2009 This document may have been altered from the original Overlap of a lone pair on the oxygen with the delocalised electrons in benzene