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5.1 Monitoring chemical reactions

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Question 9
F

Copper carbonate decomposes when it is heated.

CuCO3→CuO+CO2 \mathrm{CuCO_{3} \rightarrow CuO + CO_{2}} CuCO3​→CuO+CO2​

Relative formula mass (MrM_rMr​): CuCO3\mathrm{CuCO_{3}}CuCO3​ = 123.5 CuO\mathrm{CuO}CuO = 79.5

What is the maximum mass of copper oxide that can be made from 24.7 g of copper carbonate?

[1]
A

8.8 g

B

15.9 g

C

24.7 g

D

38.4 g

Markscheme

5.1 Monitoring chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /5.1 Monitoring chemical reactions

57 exam-style questions on OCR GCSE Chemistry 5.1 Monitoring chemical reactions, covering 5.1.1 The technique of titration, 5.1.2 Theoretical mass, percentage yield and atom economy, 5.1.3 Concentration of a solution in mol/dm3, 5.1.4 Concentration calculations and titration results, 5.1.5 Molar gas volume and volumes of gases in reactions, and 5.1.6 Choosing a reaction pathway. Each one has a worked solution and a mark scheme showing where the marks go.

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