TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
PH UNIT [2 records]
Record 1 - internal organization data 2011-09-12
Record 1, English
Record 1, Subject field(s)
- Scientific Research Equipment
- Equipment (Chemistry)
- Electrochemistry
Record 1, Main entry term, English
- pH unit
1, record 1, English, pH%20unit
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 OBS
Term(s) taken from a Canadian laboratory-equipment company's catalogue. 1, record 1, English, - pH%20unit
Record 1, French
Record 1, Domaine(s)
- Matériel et équipement (Recherche scientifique)
- Équipement (Chimie)
- Électrochimie
Record 1, Main entry term, French
- unité de pH
1, record 1, French, unit%C3%A9%20de%20pH
feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
Terme(s) tiré(s) du catalogue d'une compagnie canadienne d'équipement de laboratoire. 1, record 1, French, - unit%C3%A9%20de%20pH
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1982-08-10
Record 2, English
Record 2, Subject field(s)
- Analytical Chemistry
- Electrolysis (Electrokinetics)
- Metrology and Units of Measure
Record 2, Main entry term, English
- pH unit
1, record 2, English, pH%20unit
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- pH scale unit 2, record 2, English, pH%20scale%20unit
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
The hydrogen-ion concentration and the hydrogen-ion activity of most solutions is a small number that can be expressed in exponential form. In order to eliminate the use of exponential numbers in expressing hydrogen-ion concentration, S.P.L. Sorensen in 1909 introduced the concept of pH .... This table brings out certain characteristics of the pH unit. A neutral solution has a pH of 7, acid solutions have a pH less than 7, and basic solutions have a pH greater than 7. 1, record 2, English, - pH%20unit
Record 2, French
Record 2, Domaine(s)
- Chimie analytique
- Électrolyse (Électrocinétique)
- Unités de mesure et métrologie
Record 2, Main entry term, French
- unité de pH
1, record 2, French, unit%C3%A9%20de%20pH
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
En unités de pH, l'activité du proton s'exprime en chiffres plus simples. Ainsi, une solution dans laquelle l'activité du proton est égale à 10-5 mole par litre aura un pH de 5. C'est cette commodité d'écriture qui incita (...) S.P.L. Sorensen à proposer, en 1909, une échelle logarithmique, dite échelle de pH, pour la concentration des protons dans l'eau. 1, record 2, French, - unit%C3%A9%20de%20pH
Record 2, Spanish
Record 2, Textual support, Spanish
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