A scale, running from 1 to 14, for expressing how acid or alkaline a solution is. A strong acid with a high concentration of hydrogen ions has a pH of 1-3, a neutral solution has a pH of 7, and a strongly alkaline solution has a pH of 10-14.
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 | Geography Dictionary. A Dictionary of Geography. Copyright © Susan Mayhew 1992, 1997, 2004. All rights reserved. Read more |
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