Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Ethanol burns in air
19 practice questions
Practice questions
1–10 of 19
Question 1
1 mark · Easy
Answer and see the solution →State the names of the two products formed when ethanol is completely burned in air.
Question 2
3 marks · Easy
Answer and see the solution →Ethanol, C2H5OH, burns in air.
(a)[1 mark]Write the balanced chemical equation for the complete combustion of ethanol.
(b)[1 mark]State the name of the homologous series to which ethanol belongs.
(c)[1 mark]Name the functional group present in ethanol.
Question 3
2 marks · Easy
Answer and see the solution →Calculate the total number of oxygen atoms in the products formed when one molecule of ethanol combusts completely in air. Show your working.
Question 4
3 marks · Easy
Answer and see the solution →The table shows the volume of carbon dioxide produced when different volumes of ethanol are completely burned in air.
Volumes of ethanol and carbon dioxide from combustion Volume of ethanol burned (cm^3) Volume of CO2 produced (cm^3) 1 2 2 4 3 6 4 8 (a)[1 mark]Describe the relationship between the volume of ethanol burned and the volume of carbon dioxide produced.
(b)[1 mark]Predict the volume of carbon dioxide produced if 5 cm^3 of ethanol is completely burned.
(c)[1 mark]Suggest why the volume of carbon dioxide produced is always double the volume of ethanol burned.
Question 5
3 marks · Easy
Answer and see the solution →The combustion of ethanol can be used as a source of energy in stoves.
(a)[1 mark]Write the molecular formula for ethanol.
(b)[1 mark]Describe what you would observe when ethanol burns in air.
(c)[1 mark]Name one use of ethanol apart from as a fuel.
Question 6
2 marks · Easy
Answer and see the solution →Calculate the mass of carbon dioxide produced when 4.6 g of ethanol burn completely in air.
(Relative atomic masses: C = 12, H = 1, O = 16)
Question 7
2 marks · Easy
Answer and see the solution →Ethanol burns in air to produce two products. Describe, in terms of substances, what is formed when ethanol undergoes complete combustion, and explain why these products are formed.
Question 8
1 mark · Easy
Answer and see the solution →State the name of one product formed when ethanol burns completely in air.
Question 9
2 marks · Normal
Answer and see the solution →State the names of the two products formed when ethanol burns completely in air.
Question 10
4 marks · Normal
Answer and see the solution →Ethanol is a member of the alcohol homologous series. When ethanol is burned in air, it reacts with oxygen.
(a)[2 marks]Write a balanced chemical equation for the complete combustion of ethanol.
(b)[2 marks]Give one use of ethanol as a fuel and explain why it is considered a biofuel.