Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Chapter
Alkenes
106 practice questions
Topics covered
Practice questions
81–90 of 106
Question 81
3 marks · Easy
Answer and see the solution →Addition reactions of ethene Reactant Product Type of Reaction Hydrogen Water (steam) (a)[2 marks]Complete the table by naming the products of these reactions.
(b)[1 mark]State the type of reaction for both cases.
Question 82
1 mark · Easy
Answer and see the solution →Write the molecular formula of the product when ethene is hydrogenated.
Question 83
3 marks · Easy
Answer and see the solution →(a)[1 mark]Name the starting materials used in the industrial production of ethanol from ethene.
(b)[1 mark]Write the balanced equation for this process.
(c)[1 mark]State one condition required for this reaction.
Question 84
2 marks · Easy
Answer and see the solution →How many moles of hydrogen are needed to react with 0.60 mol of ethene during hydrogenation?
Question 85
2 marks · Normal
Answer and see the solution →Write a balanced chemical equation for each of the following reactions involving ethene:
(a)[1 mark]Hydrogenation of ethene to form an alkane.
(b)[1 mark]Hydration of ethene to form an alcohol.
Question 86
4 marks · Normal
Answer and see the solution →Ethene can undergo different addition reactions.
(a)[1 mark]Write the balanced chemical equation for the hydrogenation of ethene.
(b)[1 mark]Name the product formed in this reaction.
(c)[1 mark]Write the balanced chemical equation for the hydration of ethene (include state symbols for steam and ethanol).
(d)[1 mark]State two conditions required for the hydration of ethene.
Question 87
1 mark · Normal
Answer and check →Which product is formed when ethene reacts with steam under suitable conditions?
- A.Methanol
- B.Ethanol
- C.Propane
- D.Ethane
Question 88
2 marks · Normal
Answer and see the solution →State the type of reaction and name the product formed when ethene reacts with hydrogen.
Question 89
4 marks · Normal
Answer and see the solution →The hydration and hydrogenation of ethene are both addition reactions important in industry.
(a)[1 mark]Write the balanced equation for the hydrogenation of ethene including the structural formula of the product.
(b)[1 mark]State a use of this reaction in the food industry.
(c)[1 mark]Write the balanced equation for the hydration of ethene to form ethanol, including state symbols.
(d)[1 mark]Give one industrial use for ethanol produced in this way.
Question 90
3 marks · Normal
Answer and see the solution →Ethene is hydrogenated in industry to form ethane by adding hydrogen gas. Calculate the mass of ethane produced when 4.2 g of ethene reacts completely with excess hydrogen. (Relative atomic masses: C = 12, H = 1)