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

Atoms, molecules and stoichiometry — practice question

X is an organic compound whose mass composition is 30.6% carbon, 3.8% hydrogen, 20.4% oxygen and 45.2% chlorine. Calculate the empirical formula of X.

  • A$\text{C}_2\text{H}_3\text{OCl}$
  • B$\text{C}_2\text{H}_4\text{OCl}$
  • C$\text{C}_3\text{H}_4\text{OCl}$
  • D$\text{C}_4\text{H}_3\text{O}_2\text{Cl}_2$

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