Question

Which of the following is the strongest acid in aqueous solution?

• A. \( \text{HCl} \)
• B. \( \text{H}_2\text{SO}_4 \)
• C. \( \text{HNO}_3 \)
• D. \( \text{HF} \)

Hint:

The strength of an acid in aqueous solution depends on its ability to dissociate and release hydrogen ions (H\(^+\)).

Answer 1

The Correct Option is B

Sulfuric acid (\( \text{H}_2\text{SO}_4 \)) is a strong acid that dissociates completely in water, releasing two protons (H\(^+\)). It has a higher acid strength than hydrochloric acid (\( \text{HCl} \)) or nitric acid (\( \text{HNO}_3 \)), both of which are also strong acids but dissociate only once. Hydrofluoric acid (\( \text{HF} \)) is a weak acid due to hydrogen bonding and does not dissociate completely. Thus, \( \text{H}_2\text{SO}_4 \) is the strongest acid in aqueous solution. Therefore, the correct answer is option (2).