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7.1 Carbon compounds as fuels and feedstock

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Question 6

A student writes this equation for the complete combustion of propane.

C3H8+4O2→2CO2+4H2O\text{C}_3\text{H}_8 + 4\text{O}_2 \rightarrow 2\text{CO}_2 + 4\text{H}_2\text{O}C3​H8​+4O2​→2CO2​+4H2​O

Which equation corrects the student's equation?

[1]
A

C3H8+4O2→3CO2+4H2O\text{C}_3\text{H}_8 + 4\text{O}_2 \rightarrow 3\text{CO}_2 + 4\text{H}_2\text{O}C3​H8​+4O2​→3CO2​+4H2​O

B

C3H8+4O2→3CO2+2H2O\text{C}_3\text{H}_8 + 4\text{O}_2 \rightarrow 3\text{CO}_2 + 2\text{H}_2\text{O}C3​H8​+4O2​→3CO2​+2H2​O

C

C3H8+7O2→3CO2+8H2O\text{C}_3\text{H}_8 + 7\text{O}_2 \rightarrow 3\text{CO}_2 + 8\text{H}_2\text{O}C3​H8​+7O2​→3CO2​+8H2​O

D

C3H8+5O2→3CO2+4H2O\text{C}_3\text{H}_8 + 5\text{O}_2 \rightarrow 3\text{CO}_2 + 4\text{H}_2\text{O}C3​H8​+5O2​→3CO2​+4H2​O

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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