2019 - Q8
The structure of an organic compound is shown.
Which row of the table correctly gives the name of the compound and one of the reactants used to produce it in a one-step reaction?
2019 - Q9
All of the following compounds have similar molar masses.
Which has the highest boiling point?
A. Butane
B. Ethanoic acid
C. Propan-1-ol
D. Propanone
2019 - Q21 (3 marks)
(c) A chemical test is required to distinguish between the isomers in part (b) (as below).
Identify a suitable test and explain the expected observations.
2019 - Q34 (7 marks)
The following reaction scheme can be used to synthesise ethyl ethanoate.
Outline the reagents and conditions required for each step and how the product of each step could be identified.
2020 - Q3
Which of the following compounds is the most basic?
A. Ethane
B. Ethanol
C. Ethanamine
D. Ethyl ethanoate
2020 - Q9
Which compound reacts readily with sodium hydrogen carbonate?
2020 - Q27 (5 marks)
A student makes up a solution of propan-2-amine in water with a concentration of 1.00 mol L–1.
(a) Using structural formulae, complete the equation for the reaction of propan-2-amine with water. (2 marks)
2020 - Q32 (4 marks)
The table shows three compounds and their boiling points.
An ester does not always have a lower boiling point than both the alcohol and the alkanoic acid from which it is produced. Using the information in the table, account for this observation.
2021 - Q4
The structure of ethyl pentanoate is shown.
Which pair of chemicals would produce ethyl pentanoate by esterification?
A. Ethene and pentan-1-ol
B. Ethane and pentanoic acid
C. Ethanol and pentanoic acid
D. Ethanoic acid and pentan-1-ol
2021 - Q8
Which diagram shows the expected arrangement of soap anions in an emulsion?
2021 - Q26 (6 marks)
A sequence of chemical reactions, starting with 2-methylprop-1-ene, is shown in the flow chart.
(a) Complete the flow chart by drawing structural formulae for compounds A, B, C and D. (4 marks)
(b) Reflux is used in the synthesis of methyl 2-methylpropanoate. Provide TWO reasons for using this technique. (2 marks)
