https://wikimd.org/index.php?action=history&feed=atom&title=PHPH - Revision history2026-04-25T08:18:26ZRevision history for this page on the wikiMediaWiki 1.44.2https://wikimd.org/index.php?title=PH&diff=4967978&oldid=prevPrab at 01:44, 13 September 20232023-09-13T01:44:43Z<p></p>
<p><b>New page</b></p><div>pH is a measure of the [[acidic]] or [[basic]] character of a substance. The normal PH is 7.35.<br />
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[[File:PH scale 2.png|PH scale|thumb]]<br />
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'''pH''' is a logarithmic scale used in [[chemistry]] to specify the acidity or basicity (alkalinity) of an aqueous solution. Solutions with a pH less than 7 are considered acidic, while those with a pH greater than 7 are basic or alkaline. A solution with a pH of 7 is considered neutral, neither acidic nor basic.<br />
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== Definition ==<br />
The pH scale measures the concentration of hydrogen ions ([[H+]]) in a solution. <br />
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== Importance in Nature ==<br />
The pH of a solution can greatly affect biological systems. Most biological processes occur at a pH near 7, and significant deviations can result in harmful effects. <br />
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=== Human Body ===<br />
The human body maintains a tightly controlled pH level, especially in the blood, which has a pH of approximately 7.4. Changes in this pH, a condition called [[acidosis]] or [[alkalosis]], can be harmful and even life-threatening.<br />
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== Measurement ==<br />
Various methods exist to measure pH, including:<br />
* '''pH indicators''': substances that change color in response to different pH levels.<br />
* '''pH meters''': electronic devices that measure pH with high precision.<br />
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== pH in Everyday Life ==<br />
The pH of everyday substances can vary widely:<br />
* [[Lemon juice]] and [[vinegar]] are acidic with a pH of around 2.<br />
* [[Baking soda]] and [[soap]] are basic with a pH above 7.<br />
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== Importance in Industry ==<br />
pH plays a crucial role in many industrial processes, including:<br />
* [[Water treatment]]<br />
* [[Food processing]]<br />
* [[Pharmaceutical production]]<br />
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== See Also ==<br />
* [[Acid]]<br />
* [[Base (chemistry)|Base]]<br />
* [[Buffer solution]]<br />
* [[pOH]]<br />
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[[Category:Chemistry concepts]]<br />
[[Category:Acidity and basicity]]<br />
[[Category:Acid–base chemistry]]<br />
[[Category:Equilibrium chemistry]]<br />
[[Category:Units of measurement]]<br />
[[Category:Water quality indicators]]<br />
[[Category:Logarithmic scales of measurement]]<br />
[[Category:General chemistry]]<br />
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