2 Naming organic chemicals

 

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4.1.1 basic concepts and hydrocarbons Page 2 - 4

Oxford Textbook Pages : 174 - 178

CGP Revision Guide Pages : 85

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Show Specification Ref : 4.1.1a

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Question 1 / 5

AQA Jan 2011 Paper 1 Q6 do not write outside the box octane is the eighth member of the alkane homologous series a state two characteristics of a homologous series marks extra space b name a process used to separate octane from a mixture containing several different alkanes mark wmp jan chem c the structure shown below is one of several structural isomers of octane do not write outside the box h c ch ch ch give the meaning of the term structural isomerism name this isomer and state its empirical formula marks extra space d suggest why the branched chain isomer shown above has a lower boiling point than octane marks end of questions wmp jan chem
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Question 2 / 5

AQA Jun 2010 Paper 1 Q5 do not write outside the box the alkane butane is used as a fuel a i write an equation for the complete combustion of butane mark a ii state a condition which may cause carbon to be formed as a product in the combustion of butane mark b butane obtained from crude oil may contain trace amounts of an impurity when this impurity burns it produces a toxic gas that can be removed by reacting it with calcium oxide coated on a mesh b i suggest the identity of the toxic gas mark b ii suggest why calcium oxide reacts with the toxic gas mark b iii suggest why the calcium oxide is coated on a mesh mark turn over for the next question turn over wmp jun chem do not write outside the box pent ene is a member of the alkene homologous series a pent ene can be separated from other alkenes state the physical property of alkenes that allows them to be separated from a mixture by fractional distillation mark b i state the meaning of the term structural isomerism marks b ii name the branched chain isomer of pent ene shown below ch ch cc mark b iii draw the structure of a functional group isomer of pent ene mark wmp jun chem
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Question 3 / 5

AQA Jun 2013 Paper 1 Q1 section a answer all questions in the spaces provided do not write outside the box the mass spectrum of the isotopes of element x is shown in the diagram relative abundance m z a define the term relative atomic mass marks b use data from the diagram to calculate the relative atomic mass of x give your answer to one decimal place marks wmp jun chem do not write outside the box c identify the ion responsible for the peak at mark d identify which one of the isotopes of x is deflected the most in the magnetic field of a mass spectrometer give a reason for your answer isotope reason marks e in a mass spectrometer the relative abundance of each isotope is proportional to the current generated by that isotope at the detector explain how this current is generated marks f x and zn are different elements explain why the chemical properties of x and zn are different mark turn over wmp jun chem do not write outside the box a the hydrocarbon but ene c h is a member of the homologous series of alkenes but ene has structural isomers a i state the meaning of the term structural isomers marks a ii give the iupac name of the position isomer of but ene mark a iii give the iupac name of the chain isomer of but ene mark a iv draw the displayed formula of a functional group isomer of but ene mark wmp jun chem
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Question 4 / 5

AQA Jun 2013 Paper 1 Q2 do not write outside the box a the hydrocarbon but ene c h is a member of the homologous series of alkenes but ene has structural isomers a i state the meaning of the term structural isomers marks a ii give the iupac name of the position isomer of but ene mark a iii give the iupac name of the chain isomer of but ene mark a iv draw the displayed formula of a functional group isomer of but ene mark wmp jun chem do not write outside the box b but ene burns in a limited supply of air to produce a solid and water only b i write an equation for this reaction mark b ii state one hazard associated with the solid product in part b i mark c one mole of compound y is cracked to produce two moles of ethene one mole of but ene and one mole of octane c h only c i deduce the molecular formula of y mark c ii other than cracking give one common use of y mark d in cars fitted with catalytic converters unburned octane reacts with nitrogen monoxide to form carbon dioxide water and nitrogen only d i write an equation for this reaction mark d ii identify a catalyst used in a catalytic converter mark turn over wmp jun chem 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
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Question 5 / 5

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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