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DISSOCIATION EQUILIBRIUM [1 record]
Record 1 - internal organization data 1982-08-15
Record 1, English
Record 1, Subject field(s)
- Electrolysis (Electrokinetics)
- Electrochemistry
- Chemistry
Record 1, Main entry term, English
- dissociation equilibrium
1, record 1, English, dissociation%20equilibrium
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- ionic equilibrium 2, record 1, English, ionic%20equilibrium
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
The classical method for determining the dissociation constant of an acid or a base is to measure the electrical conductivity of solutions of varying concentrations ... It is ... unsuitable for acids of pK [smaller than] 7, because impurities in the solvent may affect the conductivity or displace the dissociation equilibrium. 1, record 1, English, - dissociation%20equilibrium
Record 1, French
Record 1, Domaine(s)
- Électrolyse (Électrocinétique)
- Électrochimie
- Chimie
Record 1, Main entry term, French
- équilibre de dissociation
1, record 1, French, %C3%A9quilibre%20de%20dissociation
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- équilibre d'ionisation 1, record 1, French, %C3%A9quilibre%20d%27ionisation
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Un acide HA est une substance qui, en solution aqueuse, fournit, lors de son équilibre de dissociation, des protons H (...); une base BOH est une substance qui, dans les mêmes conditions, fournit des ions OH- (...). A ces équilibres correspondent des constantes (...) 1, record 1, French, - %C3%A9quilibre%20de%20dissociation
Record number: 1, Textual support number: 1 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 (association) 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. 2, record 1, French, - %C3%A9quilibre%20de%20dissociation
Record 1, Spanish
Record 1, Textual support, Spanish
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