Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Chapter
Alcohols
130 practice questions
Topics covered
- Drawing and naming the alcohols21 practice questions
- Ethanol burns in air19 practice questions
- Ethanol can be oxidised by heating with potassium dichromate(VI) in dilute sulfuric acid21 practice questions
- Making ethanol by fermentation19 practice questions
- Making ethanol by the hydration of ethene19 practice questions
- Comparing the two methods of producing ethanol20 practice questions
Practice questions
1–10 of 57 · Normal
Question 1
2 marks · Normal
Answer and see the solution →State the number of carbon atoms in the molecules of:
(a)[1 mark]methanol
(b)[1 mark]butan-1-ol
Question 2
4 marks · Normal
Answer and see the solution →Name each alcohol below using IUPAC conventions.
(a)[1 mark]An alcohol with the molecular formula C2H6O and the structural formula CH3CH2OH.
(b)[1 mark]An alcohol with the molecular formula C3H8O where the -OH group is attached to the second carbon atom.
(c)[1 mark]An alcohol with four carbon atoms and the -OH group attached to the first carbon atom.
(d)[1 mark]State another acceptable name that could be used for butan-1-ol in an exam.
Question 3
3 marks · Normal
Answer and see the solution →Explain why both 'propanol' and 'propan-2-ol' could be correct names for different alcohol compounds. Use the structure and position of the –OH group in your answer.
Question 4
4 marks · Normal
Answer and see the solution →Table 1 shows information about some alcohols.
Table 1. Formulae of some alcohols Name Molecular formula Structural formula methanol CH4O CH3OH ethanol C2H6O CH3CH2OH ? C3H8O CH3CH2CH2OH butan-2-ol C4H10O CH3CHOHCH2CH3 (a)[1 mark]Name the alcohol in Table 1 with the molecular formula C3H8O and the structural formula CH3CH2CH2OH.
(b)[1 mark]How many carbon atoms are present in ethanol?
(c)[2 marks]Write the displayed formula for methanol, showing all bonds.
Question 5
1 mark · Normal
Answer and check →Which of the following is the correct IUPAC name for the alcohol with the structural formula CH3CHOHCH2CH3?
- A.butan-2-ol
- B.butan-1-ol
- C.butanol-2
- D.butenal
Question 6
2 marks · Normal
Answer and see the solution →State the molecular formula and the structural formula for ethanol.
(a)[1 mark]Molecular formula
(b)[1 mark]Structural formula
Question 7
4 marks · Normal
Answer and see the solution →Answer the following questions about the alcohol with the displayed formula:
(a)[1 mark]State the IUPAC name for this alcohol.
(b)[1 mark]Give its molecular formula.
(c)[1 mark]Write its structural formula.
(d)[1 mark]Explain why this alcohol is the simplest member of its homologous series.
Question 8
2 marks · Normal
Answer and see the solution →State the IUPAC name for the alcohol with the structural formula CH3CH2CH2OH. Explain which features of the name identify it as an alcohol.
Question 9
4 marks · Normal
Answer and see the solution →This question is about different alcohols up to four carbon atoms.
(a)[2 marks]Draw the displayed formula of ethanol. Show all bonds clearly.
(b)[1 mark]State the molecular formula of butan-1-ol.
(c)[1 mark]Give the structural formula for methanol.
Question 10
3 marks · Normal
Answer and see the solution →An alcohol contains four carbon atoms in a straight chain with the –OH group attached to the second carbon.
State the IUPAC name of this alcohol. Show all steps in your answer.