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5.1 Monitoring chemical reactions

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Question 35

Charcoal burns in a camping stove. Assume the charcoal is pure carbon.

C+O2→CO2 \mathrm{C + O_{2} \rightarrow CO_{2}} C+O2​→CO2​

Relative atomic mass (ArA_rAr​): C\mathrm{C}C = 12.0 Relative formula mass (MrM_rMr​): O2\mathrm{O_{2}}O2​ = 32.0

In one test, 4.50 g of charcoal burns completely.

What mass of oxygen reacts with the charcoal?

[1]
A

12.0 g

B

24.0 g

C

4.50 g

D

1.69 g

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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