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Pure water is classified as neutral with a pH of 7 at 25 degrees Celsius (77 degrees Fahrenheit). This neutrality is significant because it indicates that the concentration of hydrogen ions (H⁺) is equal to the concentration of hydroxide ions (OH⁻). In terms of the pH scale, which ranges from 0 to 14, values below 7 represent acidic solutions, while values above 7 indicate basic (alkaline) solutions. Therefore, pure water, having a pH value right at the midpoint of this scale, is characterized as neutral. This property is essential in various chemical and biological processes, making it a fundamental concept in chemistry.