Candidates should be able to:
(a) recall the chemistry of halogenoalkanes as exemplified by
(i) the following nucleophilic substitution reactions of bromoethane: hydrolysis, formation of nitriles, formation of primary amines by reaction with ammonia
(ii) the elimination of hydrogen bromide from 2-bromopropane
(b) *describe the mechanism of nucleophilic substitution (by both SN1 and SN2 mechanisms) in halogenoalkanes
(c) interpret the different reactivities of halogenoalkanes (with particular reference to hydrolysis and to the relative strengths of the C-Hal bonds)
(d) explain the uses of fluoroalkanes and fluorohalogenoalkanes in terms of their relative chemical inertness
(e) recognise the concern about the effect of chlorofluoroalkanes on the ozone layer
(a) recall the chemistry of halogenoalkanes as exemplified by
(i) the following nucleophilic substitution reactions of bromoethane: hydrolysis, formation of nitriles, formation of primary amines by reaction with ammonia
(ii) the elimination of hydrogen bromide from 2-bromopropane
(b) *describe the mechanism of nucleophilic substitution (by both SN1 and SN2 mechanisms) in halogenoalkanes
(c) interpret the different reactivities of halogenoalkanes (with particular reference to hydrolysis and to the relative strengths of the C-Hal bonds)
(d) explain the uses of fluoroalkanes and fluorohalogenoalkanes in terms of their relative chemical inertness
(e) recognise the concern about the effect of chlorofluoroalkanes on the ozone layer