any of the major appearances or aspects in which a thing of varying modes or conditions manifests itself to the eye or mind. 2. a stage in a process of change or development: Each phase of life brings its own joys. 3. a side, aspect, or point of view: This is only one phase of the question.
The pH of a neutral solution is 7. At this pH, the solution has equal concentrations of both the H+ and OH- ions, which is 10^-7 mole/litre. The presence of both the hydrogen and hydroxyl ions in equimolar concentrations makes the solution neutral.
Acidity, neutrality, and basicity are measured in the pH scale, which is the negative log of the concentration of [H+] within the solutions. Acidity implies that the pH is between 0 and 7, neutral is at 7, and finally, basicity means that the pH is between 7 and 14.cidity, neutrality, and basicity are measured in the pH scale, which is the negative log of the concentration of [H+] within the solutions. Acidity implies that the pH is between 0 and 7, neutral is at 7, and finally, basicity means that the pH is between 7 and 14.