5 Stereoisomers

 

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3.1 Introduction Organic Page 8

Oxford Textbook Pages : 187, 217 - 218

CGP Revision Guide Pages : 131 - 133

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Show Specification Ref : 3.3.1.3

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Question 1 / 2

AQA Jun 2015 Paper 1 Q6 do not write outside the box a central heating fuel obtained by the fractional distillation of crude oil contains saturated hydrocarbons with the molecular formula c h give the meaning of the terms saturated and hydrocarbon as applied to saturated hydrocarbons marks saturated hydrocarbon b if the boiler for a central heating system is faulty a poisonous gas may be produced during the combustion of c h write an equation for the reaction that forms this poisonous gas and one other product only mark c explain why the sulfur compounds found in crude oil should be removed from the fractions before they are used for central heating fuel marks wmp jun chem do not write outside the box d a hydrocarbon c h can be cracked to form c h ethene and propene d i write an equation to show this cracking reaction mark d ii suggest one important substance manufactured on a large scale from propene mark d iii draw the displayed formula of the functional group isomer of propene mark e there are many structural isomers with the molecular formula c h draw the structure of trimethylpentane mark question continues on the next page turn over wmp jun chem do not write outside the box f a compound c h reacts with chlorine to give several haloalkanes give the iupac name of the following haloalkane mark h c ch cl ch cl ch ch wmp jun chem
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Question 2 / 2

AQA Jun 2016 Paper 1 Q4 do not write outside the box a octane c h is an important compound in petrol a i identify the homologous series to which octane belongs mark a ii write an equation to show the complete combustion of c h mark a iii an isomer of octane used to improve the performance of car engines is shown ch ch h c c ch hc ch ch give the iupac name of this isomer mark b compound x is produced when an alkane is cracked ch ch c c b i give the iupac name for compound x mark b ii one molecule of an alkane is cracked to produce one molecule of compound x one molecule of octane and one molecule of ethene deduce the molecular formula of this alkane mark wmp jun chem b iii name the type of cracking that produces a high yield of compound x give two conditions required for this process do not write outside the box marks type of cracking conditions question continues on the next page turn over wmp jun chem b iv compound x has several isomers the structure of x is repeated here do not write outside the box ch ch c c draw the displayed formula of a chain isomer a position isomer and a functional group isomer of compound x marks type of isomer displayed formula of isomer of compound x chain position functional group wmp jun chem
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