Chemistry 0620 · IGCSE · Formulae

Formulae — practice question

A hydrocarbon has the formula $\text{C}_x\text{H}_y$. Its complete combustion equation is given below. $\text{C}_x\text{H}_y + 8\text{O}_2 \rightarrow 5\text{CO}_2 + 6\text{H}_2\text{O}$ What are the values of $x$ and $y$?

  • A$x = 5, y = 6$
  • B$x = 5, y = 12$
  • C$x = 6, y = 5$
  • D$x = 12, y = 5$

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