Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Making ethanol by the hydration of ethene
19 practice questions
Practice questions
1–8 of 8 · Easy
Question 1
1 mark · Easy
Answer and see the solution →Explain what happens to the unreacted ethene during the industrial hydration process to make ethanol.
Question 2
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 3
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 4
2 marks · Easy
Answer and see the solution →Explain why unreacted ethene is recycled during the production of ethanol by hydration of ethene.
Question 5
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 6
1 mark · Easy
Answer and see the solution →Name the catalyst used in the hydration of ethene to make ethanol.
Question 7
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 8
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.