Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Unit
Organic Chemistry
785 practice questions
Topics covered
Practice questions
61–70 of 335 · Normal
Question 61
2 marks · Normal
Answer and see the solution →Write the name and displayed formula of the functional group present in all alcohols.
Question 62
4 marks · Normal
Answer and see the solution →Alcohols form a homologous series. The structure and naming of these compounds follow certain rules.
(a)[1 mark]What does the suffix '-ol' show in the name of a compound?
(b)[1 mark]Write the name of the alcohol with the molecular formula C4H9OH.
(c)[2 marks]Explain how the '-ol' ending helps to distinguish alcohols from other organic compounds.
Question 63
4 marks · Normal
Answer and see the solution →This question is about the naming of alcohols.
(a)[1 mark]State the suffix used in the names of alcohols.
(b)The following compounds are alcohols:
Compound Structural Formula Methanol CH3OH Propanol C3H7OH (i)[1 mark]Explain why the names of these compounds end with this suffix.
(ii)[1 mark]Describe how the position of the functional group can be shown in the names of alcohols containing more than two carbon atoms.
(c)[1 mark]What would be the name of an alcohol with the structural formula CH3CH2CH2OH?
Question 64
2 marks · Normal
Answer and see the solution →State the name and structure of the functional group present in all alcohols.
Question 65
4 marks · Normal
Answer and see the solution →This question is about the naming of alcohols.
(a)[1 mark]State the suffix that is used in the names of alcohols.
(b)[3 marks]Explain, with an example, how the suffix you named in part (a) is used to identify an alcohol.
Question 66
3 marks · Normal
Answer and see the solution →A compound contains 12 hydrogen atoms and 6 oxygen atoms. It belongs to the alcohol homologous series.
Calculate the total number of hydroxyl () functional groups in this compound. Show your working.
Question 67
2 marks · Normal
Answer and see the solution →State the type of reaction for each of the following. Give your answers as 'addition', 'substitution', or 'combustion'.
(a)[1 mark]Methane reacts with chlorine to form chloromethane and hydrogen chloride.
(b)[1 mark]Ethanol burns in oxygen to produce carbon dioxide and water.
Question 68
4 marks · Normal
Answer and see the solution →The following reactions involve organic compounds.
(a)Write the type of reaction (addition, substitution or combustion) for each equation below:
(i)[1 mark](ii)[1 mark](b)[2 marks]Explain how an addition reaction differs from a substitution reaction, using an example from the equations above.
Question 69
3 marks · Normal
Answer and see the solution →An unknown organic reaction is described as: "A bromine molecule is added to an alkene, producing a dibromo compound." Explain, using ideas about reaction types, how you can deduce what type of reaction this is. Refer to the reactants and products in your explanation.
Question 70
4 marks · Normal
Answer and see the solution →The table below shows four reactions of organic compounds.
Table of reactions to classify Equation Reaction 1. CH4 + Cl2 → CH3Cl + HCl 2. C2H4 + H2 → C2H6 3. 2C3H7OH + 9O2 → 6CO2 + 8H2O 4. C2H4 + Br2 → C2H4Br2 (a)[3 marks]For each equation, classify the reaction as substitution, addition, or combustion.
(b)[1 mark]State how you used the equations to identify at least two of the reaction types.