Which of the following describes an aspect of pH?
a. Any solution with a pH of 7.0 is neutral.
b. A pH of 7.0 describes an acidotic solution.
c. A pH change from 7.0 to 8.0 equals a two-fold increase in H+ ion concentration.
d. The pH is the log of the OH- ion concen-tration.
ANS: A
In this scheme, any solution with a pH of 7.0 is neutral, corresponding to the [H+] of pure water.
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