Chemistry 9701 · AS & A Level · Group 2

Group 2 — practice question

The mineral dolomite is made up of magnesium carbonate and calcium carbonate. An aqueous reagent, X, was added to a small sample of dolomite. Effervescence was observed and a white solid, Y, was produced. What might be the correct identity of reagent X and solid Y?

  • Ahydrochloric acid, calcium chloride
  • Bhydrochloric acid, magnesium chloride
  • Csulfuric acid, calcium sulfate
  • Dsulfuric acid, magnesium sulfate

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