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5.1 Monitoring chemical reactions

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Question 73
H

Nitrogen monoxide reacts with oxygen to make nitrogen dioxide.

2NO(g)+O2(g)→2NO2(g) \mathrm{2NO(g) + O_{2}(g) \rightarrow 2NO_{2}(g)} 2NO(g)+O2​(g)→2NO2​(g)

80 cm3\mathrm{cm^{3}}cm3 of nitrogen monoxide reacts completely. All volumes are measured at room temperature and pressure.

What volume of oxygen reacts and what volume of nitrogen dioxide is made?

[1]
A

oxygen 40 cm3\mathrm{cm^{3}}cm3 and nitrogen dioxide 40 cm3\mathrm{cm^{3}}cm3

B

oxygen 80 cm3\mathrm{cm^{3}}cm3 and nitrogen dioxide 80 cm3\mathrm{cm^{3}}cm3

C

oxygen 40 cm3\mathrm{cm^{3}}cm3 and nitrogen dioxide 80 cm3\mathrm{cm^{3}}cm3

D

oxygen 160 cm3\mathrm{cm^{3}}cm3 and nitrogen dioxide 160 cm3\mathrm{cm^{3}}cm3

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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