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

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Question 25

Hydrogen reacts with oxygen when the mixture is sparked.

$2H2+O2→2H2O2\text{H}_2 + \text{O}_2 \rightarrow 2\text{H}_2\text{O}$

240 cm³ of hydrogen is mixed with 240 cm³ of oxygen and the mixture is sparked. All volumes are measured at the same temperature and pressure.

What is the volume of oxygen left over after the reaction?

[1]

$cm360\ \text{cm}^3$

$cm380\ \text{cm}^3$

$cm3120\ \text{cm}^3$

$cm3240\ \text{cm}^3$

Markscheme

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

GCSE
Chemistry
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.

Question bank·3.5 Use of amount of substance in relation to volumes of gases