Recall: A solution with a pH less than 7 is classified as acidic; the lower the pH, the more acidic a solution is. On the other hand, a solution with a pH greater than 7 is classified as basic or alkaline; the higher the pH, the more basic or alkaline a solution is.
The pH values of five solutions are given below. Which is the most alkaline?
a. pH = 4.5
b. pH = 13.0
c. pH = 0.0
d. pH = 1.0
e. pH = 7.0
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