Final answer:
A pH range of 6.5-7.5 is considered neutral, reflecting the behavior of water at pH 7. This range is close to neutral and is typically regarded as such in biological contexts.
Step-by-step explanation:
A pH range of 6.5-7.5 is considered a neutral environment. Water, which is neither acidic nor basic, has a pH of 7.0, which is the midpoint of the pH scale. Substances with a pH lower than 7.0 are classified as acidic, while substances with a pH higher than 7.0 are considered basic or alkaline. Examples of various pH values are human blood with a pH of 7.4, which is slightly alkaline, and orange juice with a pH of approximately 3.5, which is acidic.
Identifying the nature of a solution based on its pH is essential for understanding the behavior of substances in different environments. The given pH range of 6.5-7.5 is very close to the neutral point (pH = 7) and is more accurately described as neutral, especially in biological and environmental contexts where slight variations around neutral pH are generally still considered neutral.