Edexcel Jan 2016 (IAL) Paper 6 Q2

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Isophorone is a colourless liquid with a peppermint smell, found in cranberries. The structure of isophorone is shown below. D O N O T W R I T E I (a) There are two functional groups present in isophorone. Name these functional groups and describe a chemical test and its result that could be used to identify each functional group. Functional group Test Result *P46942A0416* N T H I S A R E A (4) D O N O T W R I T E I N T H I S A R E A D O N O T W R I T E I N T H I S A R E A<br /> (b) Isophorone has several proton environments that would produce peaks in its proton nuclear magnetic resonance (nmr) spectrum. One of the environments is circled on the structure of isophorone shown below. (i) The circled proton environment produces a peak in the low resolution nmr spectrum. State and explain the splitting pattern that you would expect in this peak in the high resolution proton nmr spectrum of the molecule. (1)(ii) On the structure of isophorone shown below, circle each of the other proton environments that would produce a peak in the low resolution proton nmr spectrum of the molecule. Indicate clearly if any of the proton environments are identical. (2) (Total for Question 2 = 7 marks) A E R A S I H T N I E T I R W T O N O D A E R A S I H T N I E T I R W T O N O D A E R A S I H T N I E T I R W T O N O D *P46942A0516* Turn over<br />

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