Chemistry 9701 · AS & A Level · Atoms, molecules and stoichiometry

Atoms, molecules and stoichiometry — practice question

Which equation shows the complete combustion of an alkene, $\text{C}_n\text{H}_{2n}$?

  • A$\text{C}_n\text{H}_{2n} + \frac{3n}{2}\text{O}_2 \rightarrow n\text{CO}_2 + 2n\text{H}_2\text{O}$
  • B$\text{C}_n\text{H}_{2n} + \frac{3n}{2}\text{O}_2 \rightarrow n\text{CO}_2 + n\text{H}_2\text{O}$
  • C$\text{C}_n\text{H}_{2n} + 2n\text{O}_2 \rightarrow n\text{CO}_2 + n\text{H}_2\text{O}$
  • D$\text{C}_n\text{H}_{2n} + 2n\text{O}_2 \rightarrow n\text{CO}_2 + 2n\text{H}_2\text{O}$

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