pHis
a measure of how acidic or basic a solution is.
The pH scale ranges from 0 to 14.
Acidic solutions have pH values below 7
A solution with a pH of 0 is very acidic.
A solution with a pH of 7 is neutral.
Pure
water has a pH of 7.
Basic
solutions have pH values above 7.
A
change of 1 pH unit represents a tenfold change in the acidity of the solution.
For example, if one solution has a pH of
1 and a second solution has a pH of 2, the first solution is not twice as
acidic as the second—it is ten times more acidic
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