AQA Jun 2013 Paper 1 Q3

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do not write outside the box in a new material called graphane was discovered the diagram shows part of a model of the structure of graphane each carbon atom is bonded to three other carbon atoms and to one hydrogen atom a deduce the type of crystal structure shown by graphane mark b state how two carbon atoms form a carbon carbon bond in graphane mark c suggest why graphane does not conduct electricity mark d deduce the empirical formula of graphane mark wmp jun chem do not write outside the box a fritz haber a german chemist first manufactured ammonia in ammonia is very soluble in water state the strongest type of intermolecular force between one molecule of ammonia and one molecule of water mark b draw a diagram to show how one molecule of ammonia is attracted to one molecule of water include all partial charges and all lone pairs of electrons in your diagram marks c phosphine ph has a structure similar to ammonia in terms of intermolecular forces suggest the main reason why phosphine is almost insoluble in water mark turn over wmp jun chem

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