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3.5 Use of amount of substance in relation to volumes of gases

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Question 14
H

Ethene burns completely in oxygen.

C2H4+3O2→2CO2+2H2O\text{C}_2\text{H}_4 + 3\text{O}_2 \rightarrow 2\text{CO}_2 + 2\text{H}_2\text{O}C2​H4​+3O2​→2CO2​+2H2​O

25 cm3 of ethene reacts completely. All volumes are measured at the same temperature and pressure.

What is the volume of oxygen that reacts?

[1]
A

75 cm375\ \text{cm}^375 cm3

B

25 cm325\ \text{cm}^325 cm3

C

50 cm350\ \text{cm}^350 cm3

D

100 cm3100\ \text{cm}^3100 cm3

Markscheme

3.5 Use of amount of substance in relation to volumes of gases Questions

  1. GCSE
  2. /Chemistry
  3. /3.5 Use of amount of substance in relation to volumes of gases

40 exam-style questions on AQA GCSE Chemistry 3.5 Use of amount of substance in relation to volumes of gases, covering 3.5.1 Volumes of gases. Each one has a worked solution and a mark scheme showing where the marks go.

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