AQA Jun 2014 Paper 4 Q5

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do not write outside the box a the carbonyl compound ch ch cho reacts very slowly with hcn name and outline a mechanism for the reaction of ch ch cho with hcn marks name of mechanism mechanism b the reaction in question a produces a pair of enantiomers b i draw the structure of each enantiomer to show how they are related to each other marks wmp jun chem b ii state and explain how you could distinguish between the two enantiomers do not write outside the box marks c give the iupac name of the product of the reaction in question a mark d in practice kcn rather than hcn is added to the carbonyl compound given that ka for hcn mol dm suggest why the reaction with hcn is very slow marks question continues on the next page turn over wmp jun chem do not write outside the box e acrylic fibres are used as a substitute for wool acrylics are copolymers of acrylonitrile with other compounds acrylonitrile is the common name for the following compound e i acrylonitrile can be formed from propene h c ch c n write an equation for the reaction of propene with ammonia and oxygen to form acrylonitrile and one other product mark e ii the term copolymer is used to describe the product obtained when two or more different monomers form a polymer draw the repeating unit of the acrylic copolymer that contains acrylonitrile monomer and chloroethene monomer mark e iii name the type of polymerisation involved in question e ii mark wmp jun chem turn over for the next question do not write on this page answer in the spaces provided turn over wmp jun chem

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