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

Atoms, molecules and stoichiometry — practice question

Distinct samples, each with a mass of $1.0\,\text{g}$, of the compounds in the list are each reacted with an excess of dilute acid. Which compound gives off the greatest amount of $\text{CO}_2$?

  • A$1.0\,\text{g } \text{CaCO}_3$
  • B$1.0\,\text{g } \text{Li}_2\text{CO}_3$
  • C$1.0\,\text{g } \text{MgCO}_3$
  • D$1.0\,\text{g } \text{Na}_2\text{CO}_3$

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