What pH value is considered neutral at 25 degrees Celsius?

The pH scale measures how acidic or basic a solution is, with values ranging from 0 to 14. A pH value of 7 is considered neutral, meaning that the solution is neither acidic nor basic. This neutrality occurs at 25 degrees Celsius and indicates the concentration of hydrogen ions (H+) is equal to that of hydroxide ions (OH-). Values below 7 indicate acidity, while values above 7 indicate alkalinity. Understanding this scale is fundamental in chemistry, as it helps in determining the nature of the solutions being studied or used in various applications.