Skip to content

Course home

6.2 Quantitative analysis

6.2 Quantitative analysis

EasyMediumHard
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556
Question 36

The balanced chemical equation for the reduction of iron(III) oxide in a blast furnace is:

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 atom economy for the production of iron (Fe\text{Fe}Fe) from this reaction.

Give your answer to three significant figures.

(Relative formula masses: Fe2O3=160\text{Fe}_2\text{O}_3 = 160Fe2​O3​=160, CO=28\text{CO} = 28CO=28, Fe=56\text{Fe} = 56Fe=56, CO2=44\text{CO}_2 = 44CO2​=44)

[3]
Markscheme

6.2 Quantitative analysis Questions

  1. GCSE
  2. /Chemistry
  3. /6.2 Quantitative analysis

119 exam-style questions on Edexcel GCSE Chemistry 6.2 Quantitative analysis, covering 6.2.1 Concentration in mol dm⁻³ and titration calculations, 6.2.2 Percentage yield and why actual yield falls short, 6.2.3 Atom economy of a reaction, 6.2.4 Choosing a reaction pathway, and 6.2.5 Molar volume of gases and Avogadro's law. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank