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7.1 Carbon compounds as fuels and feedstock

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Question 10

Methane, CH4\text{CH}_4CH4​, is used as a fuel in a boiler. During complete combustion, one molecule of methane forms one molecule of CO2\text{CO}_2CO2​ and two molecules of H2O\text{H}_2\text{O}H2​O. The possible numbers of O2\text{O}_2O2​ molecules needed are 1, 2, 3 or 4.

How many molecules of oxygen react with one molecule of methane?

[1]
A

2

B

1

C

4

D

3

Markscheme

7.1 Carbon compounds as fuels and feedstock Questions

  1. GCSE
  2. /Chemistry
  3. /7.1 Carbon compounds as fuels and feedstock

91 exam-style questions on AQA GCSE Chemistry 7.1 Carbon compounds as fuels and feedstock, covering 7.1.1 Crude oil, hydrocarbons and alkanes, 7.1.2 Fractional distillation and petrochemicals, 7.1.3 Properties of hydrocarbons, and 7.1.4 Cracking and alkenes. Each one has a worked solution and a mark scheme showing where the marks go.

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