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

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Question 15
H

Sodium hydrogencarbonate decomposes when it is heated.

2NaHCO3→Na2CO3+H2O+CO22\text{NaHCO}_3 \rightarrow \text{Na}_2\text{CO}_3 + \text{H}_2\text{O} + \text{CO}_22NaHCO3​→Na2​CO3​+H2​O+CO2​

8.4 g of sodium hydrogencarbonate is heated until no further change happens. The relative formula mass of sodium hydrogencarbonate is 84. The volume of one mole of any gas at room temperature and pressure is 24 dm3.

What is the volume of carbon dioxide produced at room temperature and pressure?

[1]
A

0.6 dm30.6\ \text{dm}^30.6 dm3

B

1.2 dm31.2\ \text{dm}^31.2 dm3

C

2.4 dm32.4\ \text{dm}^32.4 dm3

D

4.8 dm34.8\ \text{dm}^34.8 dm3

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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