2019 - Q8
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The structure of an organic compound is shown.
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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?
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2019 - Q9
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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)
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(c) A chemical test is required to distinguish between the isomers in part (b) (as below).
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Identify a suitable test and explain the expected observations.
2019 - Q34 (7 marks)
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The following reaction scheme can be used to synthesise ethyl ethanoate.
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Outline the reagents and conditions required for each step and how the product of each step could be identified.
2020 - Q3
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Which of the following compounds is the most basic?
A. Ethane
B. Ethanol
C. Ethanamine
D. Ethyl ethanoate
2020 - Q9
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Which compound reacts readily with sodium hydrogen carbonate?
2020 - Q27 (5 marks)
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A student makes up a solution of propan-2-amine in water with a concentration of 1.00 mol L–1.
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(a) Using structural formulae, complete the equation for the reaction of propan-2-amine with water. (2 marks)
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2020 - Q32 (4 marks)
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The table shows three compounds and their boiling points.
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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
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The structure of ethyl pentanoate is shown.
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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
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2021 - Q8
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Which diagram shows the expected arrangement of soap anions in an emulsion?
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2021 - Q26 (6 marks)
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A sequence of chemical reactions, starting with 2-methylprop-1-ene, is shown in the flow chart.
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(a) Complete the flow chart by drawing structural formulae for compounds A, B, C and D. (4 marks)
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(b) Reflux is used in the synthesis of methyl 2-methylpropanoate. Provide TWO reasons for using this technique. (2 marks)
