Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Chapter
Introduction to Organic Chemistry
185 practice questions
Topics covered
- Types of formula for organic molecules19 practice questions
- General formulae18 practice questions
- Displayed formulae19 practice questions
- Naming organic compounds19 practice questions
- Coding for the type of compound19 practice questions
- Coding for branched chains19 practice questions
- Structural isomerism in the alkanes19 practice questions
- A quick introductory look at the alcohols20 practice questions
- Some chemical reactions of organic compounds21 practice questions
Practice questions
141–150 of 185
Question 141
3 marks · Normal
Answer and see the solution →Explain why methanol and ethanol are both classified as alcohols, even though their formulas are different. Include reference to naming rules in your answer.
Question 142
4 marks · Normal
Answer and see the solution →The table below gives the molecular formula of several organic compounds. Complete the table by stating whether each compound is an alcohol and, if so, writing its functional group.
Compound Molecular formula Alcohol (Yes/No)? Functional group (if any) Methanol CH3OH Ethanoic acid CH3COOH Propanol C3H7OH Propene C3H6 Question 143
1 mark · Normal
Answer and check →The compound with the formula CH3CH2OH is correctly named:
- A.Ethanol
- B.Methanol
- C.Ethanoic acid
- D.Propanol
Question 144
2 marks · Normal
Answer and see the solution →Write the name and displayed formula of the functional group present in all alcohols.
Question 145
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 146
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 147
2 marks · Normal
Answer and see the solution →State the name and structure of the functional group present in all alcohols.
Question 148
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 149
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 150
2 marks · Hard
Answer and see the solution →The compound 2-methylpropan-1-ol is an example of an alcohol.
Describe how the suffix in its name shows it is an alcohol.