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Solutions having a pH that is less than 7 are called "acidic". Solutions having a pH greater than 7 are called "basic". pH equal to 7 is considered to be neutral. This is the pH of pure water at a temperature of 25 °C. Since pH is logarithmic, a change of pH by 1 corresponds to a change in concentration by a factor of 10.
Solutions having a pH that is less than 7 are called "acidic". Solutions having a pH greater than 7 are called "basic". pH equal to 7 is considered to be neutral. This is the pH of pure water at a temperature of 25 °C. Since pH is logarithmic, a change of pH by 1 corresponds to a change in concentration by a factor of 10.
[[Category:Chemistry]]
[[Category:Acid–base chemistry]]