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
31–40 of 52 · Easy
Question 31
3 marks · Easy
Answer and see the solution →Ethanol can be made by adding steam to ethene.
(a)[1 mark]Write the word equation for this reaction.
(b)[1 mark]State one condition needed for this reaction to occur.
(c)[1 mark]Name the type of compound to which ethene belongs.
Question 32
2 marks · Easy
Answer and see the solution →Glucose can be converted to ethanol and carbon dioxide by fermentation.
Calculate the maximum volume of ethanol that can be produced by fermentation of 10 g of glucose at room temperature, if the yield is 100%. Use the following information:
Relative molecular mass (M_r) Molar volume of gas at room temperature Glucose (C_6H_{12}O_6) = 180 Ethanol (C_2H_5OH) = 46 1 mol = 24 dm³ (for gases) Give your answer in grams. (You may assume the density of ethanol is not needed for this calculation.)
Question 33
1 mark · Easy
Answer and see the solution →Explain what happens to the unreacted ethene during the industrial hydration process to make ethanol.
Question 34
3 marks · Easy
Answer and see the solution →(a)[1 mark]State the word equation for the hydration of ethene to produce ethanol.
(b)[2 marks]Write the balanced symbol equation for the reaction.
Question 35
2 marks · Easy
Answer and see the solution →The hydration of ethene is carried out at high temperature and pressure in the presence of a catalyst.
(a)[1 mark]State the temperature (in °C) commonly used in this process.
(b)[1 mark]Give the range of pressures (in atmospheres) that is typically used.
Question 36
2 marks · Easy
Answer and see the solution →Explain why unreacted ethene is recycled during the production of ethanol by hydration of ethene.
Question 37
3 marks · Easy
Answer and see the solution →Masses involved in the hydration of ethene experiment Substance Mass used (g) Ethene 56 Steam 18 Ethanol 74 (a)[1 mark]Based on the table, write the word equation for the hydration of ethene.
(b)[1 mark]Write the balanced symbol equation for this reaction.
(c)[1 mark]State the mass of ethanol produced when 56 g of ethene reacts completely.
Question 38
1 mark · Easy
Answer and see the solution →Name the catalyst used in the hydration of ethene to make ethanol.
Question 39
3 marks · Easy
Answer and see the solution →(a)[1 mark]What proportion of ethene typically reacts in a single pass through the hydration process?
(b)[1 mark]Describe what happens to the remainder of the ethene.
(c)[1 mark]Explain why this recycling of ethene is important for industry.
Question 40
2 marks · Easy
Answer and see the solution →The hydration of ethene to produce ethanol is shown in the balanced equation below:
Calculate the maximum number of moles of ethanol that can be produced if you start with 12 mol of ethene and excess steam. State your answer clearly.