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6.2 Quantitative analysis

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Question 57

Copper can be made by heating copper(II) oxide in a stream of excess hydrogen.

CuO(s)+H2(g)→Cu(s)+H2O(g)\mathrm{CuO(s) + H_{2}(g) \rightarrow Cu(s) + H_{2}O(g)}CuO(s)+H2​(g)→Cu(s)+H2​O(g)

A reaction uses 5.00 g of copper(II) oxide.

Relative formula mass: CuO = 80. Relative atomic mass: Cu = 64.

Show that the maximum mass of copper that can be formed is 4.00 g.

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Markscheme

6.2 Quantitative analysis Questions

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

151 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.

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