Which type of solution would have a pH value of 1?

• A. Neutral
• B. Strong acid
• C. Weak base
• D. Weak acid

Answer: (B)

A solution with a pH value of 1 is considered to be extremely acidic. The pH scale ranges from 0 to 14, where a value below 7 indicates acidity and a value above 7 indicates alkalinity. A pH of 1 indicates a high concentration of hydrogen ions (H+), which is characteristic of strong acids. Strong acids, such as hydrochloric acid or sulfuric acid, can dissociate completely in water, leading to a low pH.

In contrast, neutral solutions have a pH of 7, indicating a balance between hydrogen and hydroxide ions. Weak acids would typically have a pH value above 1 and below 7 since they do not completely dissociate in water, resulting in a less acidic solution. Weak bases also have a pH that is greater than 7. Thus, the only option that correctly represents a solution with a pH of 1 is a strong acid.