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5.1 Monitoring chemical reactions

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Question 5

A vessel contains 4.8 dm3\mathrm{dm^{3}}dm3 of one of the gases hydrogen, nitrogen, oxygen or carbon dioxide at room temperature and pressure. The gas has a mass of 5.6 g.

One mole of any gas occupies 24 dm3\mathrm{dm^{3}}dm3 at room temperature and pressure.

Relative atomic masses (ArA_rAr​): H = 1.0, C = 12.0, N = 14.0, O = 16.0

Which gas is in the vessel?

[1]
A

oxygen

B

nitrogen

C

hydrogen

D

carbon dioxide

Markscheme

5.1 Monitoring chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /5.1 Monitoring chemical reactions

152 exam-style questions on OCR GCSE Chemistry 5.1 Monitoring chemical reactions, covering 5.1.1 The technique of titration, 5.1.2 Theoretical mass, percentage yield and atom economy, 5.1.3 Concentration of a solution in mol/dm3, 5.1.4 Concentration calculations and titration results, 5.1.5 Molar gas volume and volumes of gases in reactions, and 5.1.6 Choosing a reaction pathway. Each one has a worked solution and a mark scheme showing where the marks go.

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