Edexcel Jun 2017 (IAL) Paper 4 Q14

Answers available below

13 In a separation using high-performance liquid chromatography, the stationary phase was polar and the mobile phase was non-polar. Which compound would take the most time to travel through the column? A 1-bromopentane B 1-chloropentane C 1-iodopentane D pentane A E R A S I H T N I E T I R W T O N O D 14 Ricinoleic acid, found in castor oil, is a painkiller. (Total for Question 13 = 1 mark) OH 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) What is the systematic name for ricinoleic acid? OH E -12-hydroxyoctadec-9-enoic acid E -7-hydroxyoctadec-9-enoic acid Z -7-hydroxyoctadec-9-enoic acid Z -12-hydroxyoctadec-9-enoic acid (b) The tallest peak in the mass spectrum of ricinoleic acid is at m / e = 55. Which fragment produces this peak? A COOH B C + 4H7 C CH CHCHOH+ (1) (1) + D CH2CO2 Use this space for any rough working. Anything you write in this space will gain no credit. (Total for Question 14 = 2 marks) *P48385A0728* Turn over<br />

Show answer