Definition of PH scale

1. Noun. (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).

Exact synonyms: Ph
Generic synonyms: Hydrogen Ion Concentration
Specialized synonyms: Acidity, Alkalinity, Neutrality
Category relationships: Chemical Science, Chemistry



Medical Definition of PH scale

1. The negative logarithm of the hydrogen ion concentration, used as a scale for expressing acidity and alkalinity. See: pH. Synonym: pH scale. (05 Mar 2000)

PH Scale Pictures

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Lexicographical Neighbors of PH Scale

p57lck
p65
p67 deglycosylase
p68
p68 RNA helicase
p70
p870
pCO2
pET plasmid
pH
pH-stat
pH indicator
pH indicators
pH meter
pH scale (current term)
pHs
pIgA
pIgAs
pIgM
pIgMs
pK2
pMOS
pO2
pOH
p arm of a chromosome
p blood-group system
p in biochemistry
p in population genetics
pa'al

Literary usage of PH scale

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Determination of Hydrogen Ions: An Elementary Treatise on the Hydrogen by William Mansfield Clark (1920)
"THE pH SCALE When "acidity" wao resolved into its two components the normality unit was retained for each. As a normal solution of an acid had been defined ..."

2. Environmental Progress and Challenges: EPA's Update by DIANE Publishing Company (1997)
"Lemon Juice "Pure" Rain (5.6) Baking Soda Vinegar Distilled Water 10 11 12 13 14 The pH scale ranges from 0 to 14. A value of 7.0 is neutral. ..."

3. Science by American Association for the Advancement of Science (1922)
"... equilibria on the rH scale gives a picture of oxidation reduction indicators comparable with that of the acid base indicators plotted on the pH scale. ..."

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