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3.3 Types of chemical reactions

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Question 22

Methane burns in oxygen.

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

Statement 1: Methane is the oxidising agent.

Statement 2: Methane is oxidised.

Statement 3: Methane is the reducing agent.

Which statements are correct?

[1]
A

Statement 1 only

B

Statements 1 and 2 only

C

Statement 2 only

D

Statements 2 and 3 only

Markscheme

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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