TERMIUM Plus®
From: Translation Bureau
On social media
Consult the Government of Canada’s terminology data bank.
NULL ISOTOPE EFFECT [1 record]
Record 1 - internal organization data 1997-09-26
Record 1, English
Record 1, Subject field(s)
- Chemistry
Record 1, Main entry term, English
- unity isotope effect
1, record 1, English, unity%20isotope%20effect
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- null isotope effect 1, record 1, English, null%20isotope%20effect
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The absence of isotopic discrimination for rate or equilibrium constants (klight/kheavy = 1 or Klight/Kheavy = 1) ... 1, record 1, English, - unity%20isotope%20effect
Record number: 1, Textual support number: 1 OBS
It is more commonly thought of as a null isotope effect, on the grounds that there is zero isotopic effect on the corresponding standard Gibbs energy change. i.e. that an isotope effect exists only when the ratio of rate or equilibrium constants differs from unity. 1, record 1, English, - unity%20isotope%20effect
Record 1, French
Record 1, Domaine(s)
- Chimie
Record 1, Main entry term, French
- effet isotopique unité
1, record 1, French, effet%20isotopique%20unit%C3%A9
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- effet isotopique nul 1, record 1, French, effet%20isotopique%20nul
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
[...] absence d'effet d'un isotope sur les constantes de vitesse ou d'équilibre (k [indice] léger/k [indice] lourd= 1 ou K [indice] léger/K [indice] lourd = 1) [...] 1, record 1, French, - effet%20isotopique%20unit%C3%A9
Record number: 1, Textual support number: 1 OBS
[...] on parle plus communément d'«effet isotopique nul», puisqu'il n'y a pas d'effet isotopique sur la différence des énergies de Gibbs standard. En d'autres termes, on considère qu'il y a un effet isotopique que lorsque le rapport des constantes de vitesse ou d'équilibre est différent de l'unité. 1, record 1, French, - effet%20isotopique%20unit%C3%A9
Record 1, Spanish
Record 1, Textual support, Spanish
Copyright notice for the TERMIUM Plus® data bank
© Public Services and Procurement Canada, 2026
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau
Features
GCtranslate (available on the Government of Canada network only)
Use this artificial intelligence prototype to translate Government of Canada content up to and including Protected B. Available to employees of selected departments and agencies only.
Writing tools
The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.
Glossaries and vocabularies
Access Translation Bureau glossaries and vocabularies.
- Date Modified: