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A measure of the acidity or alkalinity of a solution, numerically equal to 7 for neutral solutions, increasing with increasing alkalinity and decreasing with increasing acidity. The pH scale commonly in use ranges from 0 to 14.
[p(otential of) h(ydrogen).]
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(Computer Science) Philippines
(Chemistry) potential of hydrogen; a measure of the acidity or alkalinity of a solution equal to the common logarithm of the reciprocal of the concentration of hydrogen ions in moles per cubic decimetre of solution. Pure water has a pH of 7, acid solutions have a pH less than 7, and alkaline solutions a pH greater than 7
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(Elements & Compounds) phenyl group or radical
the symbol for the logarithm of the reciprocal of hydrogen ion concentration in gram atoms per liter, used to describe the acidity or alkalinity of a chemical solution on a scale of 0 (more acidic) to 14 (more alkaline).
[1909; < German P(otenz) potency + H(ydrogen)]
A numerical measure of the acidity or alkalinity of a solution, usually measured on a scale of 0 to 14. Neutral solutions have a pH of 7, acidic solutions have a pH lower than 7, and alkaline solutions have a pH higher than 7.
A scale which gives a measure of the acidity of an aqueous solution. A neutral solution has a pH of 7; an acidic solution has a lower value, and an alkaline solution a higher value.
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|Noun||1.||pH - (from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7 is more acidic);|
hydrogen ion concentration - the number of moles of hydrogen ions per cubic decimeter
acidity - pH values below 7
alkalinity - pH values above 7
neutrality - pH value of 7