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3.3 Types of chemical reactions

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Question 26

The equations show four reactions.

In which reaction does the oxidising agent contain carbon?

[1]
A

2Mg+CO2→2MgO+C\mathrm{2Mg + CO_{2} \rightarrow 2MgO + C}2Mg+CO2​→2MgO+C

B

Fe2O3+3CO→2Fe+3CO2\mathrm{Fe_{2}O_{3} + 3CO \rightarrow 2Fe + 3CO_{2}}Fe2​O3​+3CO→2Fe+3CO2​

C

CH4+2O2→CO2+2H2O\mathrm{CH_{4} + 2O_{2} \rightarrow CO_{2} + 2H_{2}O}CH4​+2O2​→CO2​+2H2​O

D

2CuO+C→2Cu+CO2\mathrm{2CuO + C \rightarrow 2Cu + CO_{2}}2CuO+C→2Cu+CO2​

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3.3 Types of chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /3.3 Types of chemical reactions

112 exam-style questions on OCR GCSE Chemistry 3.3 Types of chemical reactions, covering 3.3.1 Oxidation and reduction in terms of oxygen, 3.3.2 Acids, alkalis and neutralisation, 3.3.3 The pH scale and measuring pH, 3.3.4 Oxidation and reduction in terms of electrons, 3.3.5 Dilute and concentrated, weak and strong acids, and 3.3.6 Hydrogen ion concentration and pH. Each one has a worked solution and a mark scheme showing where the marks go.

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