Which pH value indicates an acidic solution?

A pH value below 7 indicates an acidic solution. This is based on the pH scale, which ranges from 0 to 14. A pH of 7 is considered neutral, meaning the solution is neither acidic nor basic. As the pH scales down from 7 to 0, the concentration of hydrogen ions (H⁺) in the solution increases, making it more acidic. For instance, a solution with a pH of 1 is highly acidic, while a solution with a pH of 6, although less acidic than one with a pH of 1, is still considered acidic since it is below the neutral level of 7. Therefore, any value below 7 confirms that the solution has a higher concentration of hydrogen ions, characteristic of acidic solutions.