Chemistry 5070 · O Level · The characteristic properties of acids and bases

The characteristic properties of acids and bases — practice question

Samples of $\text{HCl}(aq)$ and $\text{HNO}_3(aq)$ are examined with universal indicator paper. The $\text{HCl}(aq)$ sample shows a pH of $4$, while the $\text{HNO}_3(aq)$ sample shows a pH of $2$. Which statement is correct?

  • A$\text{HCl}(aq)$ is a weak acid and $\text{HNO}_3(aq)$ is a strong acid.
  • B$\text{HNO}_3(aq)$ has a lower formula mass than $\text{HCl}(aq)$.
  • CThe $\text{HNO}_3(aq)$ is more concentrated than the $\text{HCl}(aq)$.
  • DThe $\text{HCl}(aq)$ has dissociated more than the $\text{HNO}_3(aq)$.

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