PH: Difference between revisions
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imported>Benjamin Seghers m (testing template) |
imported>David E. Volk (add equation form of definition) |
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{{lowercase|title=pH}} | {{lowercase|title=pH}} | ||
'''Potential of hydrogen''' ('''pH''') is a scale that measures the [[acid]]ity or [[alkalinity]] of a solution. Values for pH range from 0 (strongly acidic) to 14 (strongly alkaline or basic). The pH of a neutral solution, such as [[Distilled water|pure water]], is 7, whereas the pH of an acidic solution is less than 7 and the pH of a basic solution is greater than 7. The pH scale is [[logarithm]]ic, meaning that each value is 10 fold the next (for example, a pH of 12 is 10 times more basic than a pH value of 11). <!--I'm sure this can be explained better --> | '''Potential of hydrogen''' ('''pH''') is a scale that measures the [[acid]]ity or [[alkalinity]] of a solution. Values for pH range from 0 (strongly acidic) to 14 (strongly alkaline or basic). The pH of a neutral solution, such as [[Distilled water|pure water]], is 7, whereas the pH of an acidic solution is less than 7 and the pH of a basic solution is greater than 7. The pH scale is [[logarithm]]ic, meaning that each value is 10 fold the next (for example, a pH of 12 is 10 times more basic than a pH value of 11). <!--I'm sure this can be explained better --> | ||
pH is defined by | |||
<math> pH = -log \frac{1} {\left[H_\mathrm{3}O^+\right]} </math> | |||
Revision as of 15:44, 9 October 2007
Potential of hydrogen (pH) is a scale that measures the acidity or alkalinity of a solution. Values for pH range from 0 (strongly acidic) to 14 (strongly alkaline or basic). The pH of a neutral solution, such as pure water, is 7, whereas the pH of an acidic solution is less than 7 and the pH of a basic solution is greater than 7. The pH scale is logarithmic, meaning that each value is 10 fold the next (for example, a pH of 12 is 10 times more basic than a pH value of 11).
pH is defined by
![{\displaystyle pH=-log{\frac {1}{\left[H_{\mathrm {3} }O^{+}\right]}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/d746ff2ff1bb173a6ee1ec07e40f741b0c7686c9)