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dissociation constant [1 record]
Record 1 - internal organization data 2010-06-08
Record 1, English
Record 1, Subject field(s)
- Electrochemistry
- Electrolysis (Electrokinetics)
Record 1, Main entry term, English
- dissociation constant
1, record 1, English, dissociation%20constant
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- ionization constant 2, record 1, English, ionization%20constant
correct, see observation
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The degree to which an ionic molecule dissociates in a medium (usually water). 3, record 1, English, - dissociation%20constant
Record number: 1, Textual support number: 1 CONT
... the equations developed to express the relationships between the various components of reversible reactions can be applied to acid and base dissociations to give definite values, called dissociation constants. These constants can be used to characterize the relative strengths (degree of dissociation) of acids and bases, and, for this reason, supersede earlier semiquantitative estimates of acid and base strength. 4, record 1, English, - dissociation%20constant
Record number: 1, Textual support number: 1 OBS
The numerical value [of the constant] depends on the equilibrium between the undissociated forms of a molecule; a higher value indicates greater dissociation. 2, record 1, English, - dissociation%20constant
Record number: 1, Textual support number: 2 OBS
ionization constant: analog of the dissociation constant used in applications to ionization. 2, record 1, English, - dissociation%20constant
Record 1, French
Record 1, Domaine(s)
- Électrochimie
- Électrolyse (Électrocinétique)
Record 1, Main entry term, French
- constante de dissociation
1, record 1, French, constante%20de%20dissociation
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- constante de stabilité 2, record 1, French, constante%20de%20stabilit%C3%A9
correct, feminine noun
- constante d'ionisation 2, record 1, French, constante%20d%27ionisation
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
La constante de la loi d'action de masse relative à l'équilibre d'une dissociation chimique ou électrolytique. 2, record 1, French, - constante%20de%20dissociation
Record number: 1, Textual support number: 1 OBS
Les concentrations (ou les activités) étant au numérateur, plus le rapport est petit, plus le corps est stable; on dit aussi constante de stabilité. 2, record 1, French, - constante%20de%20dissociation
Record number: 1, Textual support number: 2 OBS
Cette notion complexe donne lieu à plusieurs expressions qui sont des quasi-synonymes selon l'aspect qu'on fait ressortir. Un produit chimique se dissocie (dissociation) en ions positifs et négatifs (ionisation) jusqu'à ce qu'il atteigne un certain équilibre (stabilité), variable selon chaque produit. La concentration des ions positifs multipliée par celle des ions négatifs donne le produit ionique, une constante qui permet d'évaluer quantitativement cet équilibre. La constante permet donc d'évaluer l'acidité d'un produit et, par déduction, sa basicité. 3, record 1, French, - constante%20de%20dissociation
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Electroquímica
- Electrólisis (Electrocinética)
Record 1, Main entry term, Spanish
- constante de disociación
1, record 1, Spanish, constante%20de%20disociaci%C3%B3n
feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
- constante de ionización 1, record 1, Spanish, constante%20de%20ionizaci%C3%B3n
feminine noun
Record 1, Textual support, Spanish
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