Chemistry 0620 · IGCSE · Solids, liquids and gases

Solids, liquids and gases — practice question

The equation describes the reaction of solid magnesium oxide with dilute hydrochloric acid, producing magnesium chloride and water. $\text{MgO} + 2\text{HCl} \rightarrow \text{MgCl}_2 + \text{H}_2\text{O}$. Which row gives the state symbols for hydrochloric acid, magnesium chloride and water?

  • A$\text{HCl(aq)},\ \text{MgCl}_2\text{(aq)},\ \text{H}_2\text{O(l)}$
  • B$\text{HCl(aq)},\ \text{MgCl}_2\text{(l)},\ \text{H}_2\text{O(l)}$
  • C$\text{HCl(l)},\ \text{MgCl}_2\text{(aq)},\ \text{H}_2\text{O(aq)}$
  • D$\text{HCl(l)},\ \text{MgCl}_2\text{(l)},\ \text{H}_2\text{O(aq)}$

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