PH
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In chemistry, pH is a measure of the activity of the (solvated) hydrogen ion. p[H], which measures the hydrogen ion concentration is closely related to, and is often written as, pH. Pure water has a pH very close to 7 at 25°C. Solutions with a pH less than 7 are said to be acidic and solutions with a pH greater than 7 are basic or alkaline.
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| The pH Scale The pH Scale www.science.uwaterloo.ca/~cchieh/cact/c123/ph.html - Web |
| Chem1 Virtual Textbook, Acid-base Equilibria and C... Chem1 Virtual Textbook, Acid-base Equilibria and Calculations www.chem1.com/acad/webtext/pdf/c1xacid2.pdf - Web |
| Red Cabbage pH Indicator Red Cabbage pH Indicator chemistry.about.com/library/weekly/aa012803a.htm - Web |
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