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7.1 Carbon compounds as fuels and feedstock

7.1 Carbon compounds as fuels and feedstock

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Question 5
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This question is about hydrocarbons. A hydrocarbon has the formula C10H22\text{C}_{10}\text{H}_{22}C10​H22​.

a.

How many atoms are there in one molecule of C10H22\text{C}_{10}\text{H}_{22}C10​H22​?

[1]
b.

What is the general formula of the homologous series to which C10H22\text{C}_{10}\text{H}_{22}C10​H22​ belongs?

[1]
c.

The hydrocarbon C10H22\text{C}_{10}\text{H}_{22}C10​H22​ can be cracked to produce one molecule of hexane (C6H14\text{C}_6\text{H}_{14}C6​H14​) and two molecules of another compound, XXX. Complete the carbon and hydrogen balance to find the molecular formula of XXX in the reaction:

C10H22→C6H14+2X \text{C}_{10}\text{H}_{22} \rightarrow \text{C}_6\text{H}_{14} + 2 X C10​H22​→C6​H14​+2X
[2]
Markscheme

7.1 Carbon compounds as fuels and feedstock Questions

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

12 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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