Difference between revisions of "PH"

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http://www.soils.agri.umn.edu/academics/classes/soil2125/img/11phsc1.jpg<br><br>
 
http://www.soils.agri.umn.edu/academics/classes/soil2125/img/11phsc1.jpg<br><br>
  
Image is an example of a soil pH chart.
+
Image is an example of a soil pH chart.<br>
  
Source: http://www.soils.agri.umn.edu
+
Source: http://www.soils.agri.umn.edu<br><br>

Revision as of 20:24, 25 February 2006


1. Hydrogen ion concentration or pH value is the logarithm of the reciprocal of the gram ionic hydrogen equivalents per liter: pH = log [1/(H+) per liter]. Water has a concentration of H+ ion of 10 - 7 moles per liter or a pH value of 7. An indication of the relative acidity or alkalinity. Values below 7 are increasing acid; above 7 increasing alkaline.

11phsc1.jpg

Image is an example of a soil pH chart.

Source: http://www.soils.agri.umn.edu