Chemistry · Oct / Nov 2020 · Paper 12 · Question 17
5070The mole and the Avogadro constant
The equation shows the production of iron by the reduction of iron(III) oxide. Fe2O3 + 3CO → 2Fe + 3CO2 80 tonnes of iron(III) oxide produces 50 tonnes of iron. What is the percentage yield?
- A45%
- B63%
- C68%
- D89%
As printed in the paper
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Correct answer: D. 89%
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