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6.2 Quantitative analysis

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Question 15
F

A student heats 6.20 g of copper(II) carbonate and obtains 3.60 g of copper(II) oxide. CuCO3(s)→CuO(s)+CO2(g)\mathrm{CuCO_{3}(s) \rightarrow CuO(s) + CO_{2}(g)}CuCO3​(s)→CuO(s)+CO2​(g)

What is the percentage yield? (Relative atomic masses: C = 12, O = 16, Cu = 63.5)

[1]
A

37.4%

B

58.1%

C

90.2%

D

111%

Markscheme

6.2 Quantitative analysis Questions

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

51 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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