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5.1 Monitoring chemical reactions

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Question 27

In a blast furnace, iron is made by reacting iron(III) oxide with carbon monoxide.

Fe2O3+3CO→2Fe+3CO2 \mathrm{Fe_{2}O_{3}} + 3\mathrm{CO} \rightarrow 2\mathrm{Fe} + 3\mathrm{CO_{2}} Fe2​O3​+3CO→2Fe+3CO2​

Calculate the atom economy for making iron in this reaction.

Give your answer to 3 significant figures.

Relative atomic mass (ArA_rAr​): C = 12.0 O = 16.0 Fe = 55.8

Atom economy = ...... %

[3]
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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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