Which statement describes a solution with pH 2?

Which statement describes a solution with pH 2?

• A. Acidic
• B. Neutral
• C. Basic
• D. Amphoteric

Answer: (A)

The statement is testing how pH relates to acidity. The pH scale measures hydrogen ion activity in a solution: values below 7 indicate acidity, 7 is neutral, and values above 7 indicate basicity. A pH of 2 means a very high concentration of H+ ions, specifically [H+] = 10^(-2) M (0.01 M). In contrast, neutral is pH 7 and basic is any pH above 7. Amphoteric describes substances that can act as both acids and bases depending on the situation, which isn’t determined by a single pH value. So a solution with pH 2 is best described as acidic.

The statement is testing how pH relates to acidity. The pH scale measures hydrogen ion activity in a solution: values below 7 indicate acidity, 7 is neutral, and values above 7 indicate basicity. A pH of 2 means a very high concentration of H+ ions, specifically [H+] = 10^(-2) M (0.01 M). In contrast, neutral is pH 7 and basic is any pH above 7. Amphoteric describes substances that can act as both acids and bases depending on the situation, which isn’t determined by a single pH value. So a solution with pH 2 is best described as acidic.