OCR A Jun 2011 Paper 2 Q5

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This question is about the following organic compounds. 12 H B O E Br Cl H C CH3CH CHCH3 CH3CH CH2 You will have to refer to these compounds throughout the question. (a) Explain why compound A is a hydrocarbon.[1] (b) Which compound is a saturated hydrocarbon?[1] (c) What is the molecular formula for compound E?[1] (d) Which compounds are structural isomers of one another?[1]OCR 2011<br /> (e) In compound G, there are different shapes around different carbon atoms. (i) State and explain the shape around carbon atom number 1 in compound G. 13[2] (ii) State the shape around carbon atom number 2 in compound G.[1] (f) (i) Which compound shows E/Z isomerism?[1] (ii) Explain why some molecules show E/Z isomerism.[2] TURN OVER FOR PART (g)OCR 2011 Turn over<br /> (g) Compounds B and C are halogenoalkanes. Both compounds can be hydrolysed with aqueous potassium hydroxide, KOH(aq). 14 H B Br H C Cl Describe and explain the hydrolysis of B and C. In your answer, includeone equation including the structure of the organic product the reaction mechanism, using the curly arrow model, showing any relevant dipoles the type of bond fission that occurs the reasons for the difference in the rate of hydrolysis. Your answer needs to be clear and well organised using the correct terminology.OCR 2011<br /> 15[10] TURN OVER FOR PART (h)OCR 2011 Turn over<br /> (h) Compound A is 1-methylcyclohex-1-ene. 16 Compound A reacts with H2 to give one product and with HBr to give two products. Draw the structures of the products of these reactions. product of reaction of H2 with A two products of reaction of HBr with A [3] [Total: 23]OCR 2011<br /> 17 BLANK PAGE PLEASE DO NOT WRITE ON THIS PAGE TURN OVER FOR QUESTIONS 6 AND 7OCR 2011 Turn over<br />

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