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Size of this PNG preview of this SVG file: ... A pH scale with annotated examples of chemicals at each integer pH value. Date: 29 March 2010: Source:
This image is a derivative work of the following images:jbhoikjbi File:PHscalenolang.png licensed with Cc-by-sa-2.5, Cc-by-sa-2.5 . 2007-01-23T22:52:18Z PatríciaR 731x205 (14953 Bytes) {{Information |Description=A simple pH (and pOH) scale, for multi-language use. |Source=own work |Date=23rd January 2007 |Author=myself, PatríciaR |Permission= |other_versions=[[:Image:EscalapH.png]], in ...
English: I retrieved the soil pH maps from . In GIMP 2.4.3 I used the "Select by Color Tool" (threshold 15.0) to create pH-specific maps. Note that the original maps do not indicate actual pH values in the pH scale. For soils with acidic pH, I included the colors indicated by the leftmost 14 bars in the pH scale, ranging from red to pink.
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The pH range is commonly given as zero to 14, but a pH value can be less than 0 for very concentrated strong acids or greater than 14 for very concentrated strong bases. [2] The pH scale is traceable to a set of standard solutions whose pH is established by international agreement. [3]
The pH value of a neutral solution is 7.0 at 25°C (standard laboratory conditions). Solutions with a pH value below 7.0 are considered acidic and solutions with pH value above 7.0 are basic. Solutions with a pH value below 7.0 are considered acidic and solutions with pH value above 7.0 are basic.
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Main page; Contents; Current events; Random article; About Wikipedia; Contact us