Why ph is between 0 to 14 ?
- The pH scale is maintained to range from 0-14 or maybe 1-14, but neither is correct.
- The pH range does not have an upper nor lower bound.
- The pH is an indication of concentration of H+.
- For example, at a pH of zero the hydronium ion concentration is one molar, while at pH 14 the hydroxide ion concentration is one molar.
- Typically, the concentrations of H+ in water in most solutions fall between a range of 1 M (pH=0) and 10-14 M (pH=14).
- Hence a range of 0 to 14 provides sensible (but not absolute) “bookends” for the scale.