Difference between revisions of "PH"
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Soil pH is a measure for how many H<sup>+</sup> ions a soil contains. | Soil pH is a measure for how many H<sup>+</sup> ions a soil contains. | ||
| − | pH is defined as the negative logarithm (base 10) of the activity of hydrogen ions (H<sup>+</sup>) in solution. It ranges from 0 to 14, with 7 being neutral. A pH below 7 is acidic and above 7 is basic.<ref>[http://en.wikipedia.org/wiki/Soil_pH Soil pH - Wikipedia]</ref> A pH of 6 means that there are 10 times more H<sup>+</sup> ions in the soil compared to pH 7, while a pH of 3 means that there are 10,000(10<sup></sup> | + | pH is defined as the negative logarithm (base 10) of the activity of hydrogen ions (H<sup>+</sup>) in solution. It ranges from 0 to 14, with 7 being neutral. A pH below 7 is acidic and above 7 is basic.<ref>[http://en.wikipedia.org/wiki/Soil_pH Soil pH - Wikipedia]</ref> A pH of 6 means that there are 10 times more H<sup>+</sup> ions in the soil compared to pH 7, while a pH of 3 means that there are 10,000(10<sup>4</sup>) times more H<sup>+</sup> ions in solution compared to pH 7. |
Revision as of 06:45, 15 January 2012
- Topic in Gardening courses
Soil pH is a measure for how many H+ ions a soil contains.
pH is defined as the negative logarithm (base 10) of the activity of hydrogen ions (H+) in solution. It ranges from 0 to 14, with 7 being neutral. A pH below 7 is acidic and above 7 is basic.[1] A pH of 6 means that there are 10 times more H+ ions in the soil compared to pH 7, while a pH of 3 means that there are 10,000(104) times more H+ ions in solution compared to pH 7.
