Chemistry 0620 · IGCSE · The characteristic properties of acids and bases

The characteristic properties of acids and bases — practice question

Two experiments using acids R and S are carried out. • $0.10\,\text{mol}$ of acid R fully dissolves in $500\,\text{cm}^3$ of water. In the solution, $0.0048\,\text{mol}$ of acid R is dissociated. • $0.10\,\text{mol}$ of acid S fully dissolves in $500\,\text{cm}^3$ of water. In the solution, $0.0179\,\text{mol}$ of acid S is dissociated. Which statement is correct about acids R and S?

  • AAcid R is a strong acid, and acid S is a weak acid.
  • BAcid R is a weak acid, and acid S is a strong acid.
  • CAcid R and acid S are both strong acids.
  • DAcid R and acid S are both weak acids.

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