Edexcel Jan 2017 (IAL) Paper 5 Q15

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13 What mass of water in g is produced during the complete combustion of 0.002 mol of octane, C8H18? A 0.036 B 0.072 C 0.324 D 0.648 (Total for Question 13 = 1 mark) 14 Which is the most important advantage of combinatorial chemistry over traditional methods for developing pharmaceuticals? A Many more compounds can be made in a given time. B Only stereo-specific compounds are formed. C The compounds formed have fewer impurities. D The compounds formed have fewer side effects. (Total for Question 14 = 1 mark) 15 Linalool is an organic liquid that is immiscible with water and can decompose below its boiling temperature. It is extracted from lavender flowers and stalks. The lavender flowers and stalks are crushed and mixed with water. Which is the correct order of practical techniques to extract linalool from this mixture? refluxing, distilling, drying, decanting B steam distilling, purifying by washing, drying, decanting C steam distilling, using a separating funnel, drying, decanting D using a separating funnel, drying, decanting, distilling (Total for Question 15 = 1 mark) 16 In a methanol-oxygen fuel cell, methanol is A oxidised at the anode. B oxidised at the cathode. reduced at the anode. D reduced at the cathode. (Total for Question 16 = 1 mark) *P48373A0632* 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 D O N O T W R I T E I N T H I S A R E A<br />

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