Which pH level range is considered neutral?

The pH scale measures the acidity or alkalinity of a solution, with a range from 0 to 14. A pH level of 7 is defined as neutral, meaning that the concentration of hydrogen ions (H⁺) and hydroxide ions (OH⁻) is equal. This neutrality is illustrated by pure water, which has a pH of 7 at standard temperature and pressure.

Understanding the implications of this neutrality is essential. A pH lower than 7 indicates acidic conditions, while a pH higher than 7 indicates alkaline or basic conditions. Thus, recognizing that a pH level of 7 is the only value that represents a neutral state is crucial in various fields such as biology, chemistry, and environmental science. In practical applications, maintaining a neutral pH is often important for processes related to plant growth and soil health.