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Quantitative analysis

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Question 55

Iron is required for the production of steel.

Iron can be obtained by reducing iron(III) oxide with carbon monoxide in a blast furnace.

Fe2O3+3CO→2Fe+3CO2 \text{Fe}_2\text{O}_3 + 3\text{CO} \rightarrow 2\text{Fe} + 3\text{CO}_2 Fe2​O3​+3CO→2Fe+3CO2​

Calculate the percentage atom economy for the production of iron, Fe\text{Fe}Fe, in this reaction.

(relative atomic masses: C=12.0\text{C} = 12.0C=12.0, O=16.0\text{O} = 16.0O=16.0, Fe=55.8\text{Fe} = 55.8Fe=55.8

relative formula masses: CO=28.0\text{CO} = 28.0CO=28.0, Fe2O3=159.6\text{Fe}_2\text{O}_3 = 159.6Fe2​O3​=159.6)

Give your answer to two significant figures.

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Quantitative analysis Questions

  1. GCSE
  2. /Chemistry
  3. /Quantitative analysis

Practise Edexcel GCSE Chemistry Quantitative analysis with exam-style questions for Foundation and Higher tier. 119 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank