What is the pH range of a strong acid?

The pH range of a strong acid is from 0 to 7. Strong acids, such as hydrochloric acid (HCl) and sulfuric acid (H2SO4), completely dissociate in water, releasing a high concentration of hydrogen ions (H⁺). This high concentration of hydrogen ions results in a low pH value, typically falling between 0 and 3 for most strong acids.

As the concentration of hydrogen ions increases, the pH decreases, indicating a more acidic solution. A pH of 7 is considered neutral, which is characteristic of pure water, while a pH above 7 indicates a basic or alkaline solution. Therefore, strong acids are definitively characterized by their pH values being below 7, confirming that the correct range is indeed from 0 to 7.