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

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Question 12

Hydrogen sulfide reacts with oxygen according to the equation:

2H2S+3O2→2SO2+2H2O2\text{H}_2\text{S} + 3\text{O}_2 \rightarrow 2\text{SO}_2 + 2\text{H}_2\text{O}2H2​S+3O2​→2SO2​+2H2​O

Two mixtures of the gases were made. The reaction went to completion in each mixture. All gas volumes, including the sulfur dioxide produced, were measured at the same temperature and pressure.

MixtureVolume of hydrogen sulfide (cm3\text{cm}^3cm3)Volume of oxygen (cm3\text{cm}^3cm3)
A180240
B120240

Determine which mixture produces the greater volume of sulfur dioxide, and by how much.

[4]
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

100 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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