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acidity constant [1 record]
Record 1 - internal organization data 2012-02-15
Record 1, English
Record 1, Subject field(s)
- Electrolysis (Electrokinetics)
- Electrochemistry
- Chemistry
Record 1, Main entry term, English
- acidity constant
1, record 1, English, acidity%20constant
correct
Record 1, Abbreviations, English
- Ka 2, record 1, English, Ka
correct, see observation
Record 1, Synonyms, English
- dissociation constant of an acid 3, record 1, English, dissociation%20constant%20of%20an%20acid
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The equilibrium constant Kan for splitting off the nth proton from a charged or uncharged acid, to be defined. 4, record 1, English, - acidity%20constant
Record number: 1, Textual support number: 1 CONT
If an acid A is added to the solvent SH it will be at least partly converted into the conjugate base B ... Ka is known as the dissociation constant of the acid A in the solvent SH. ... Similar considerations apply to solutions of bases ... the equilibrium constant Kb is termed the dissociation constant of the base B. ... 5, record 1, English, - acidity%20constant
Record number: 1, Textual support number: 1 OBS
Ka: the letter "a" in this symbol is a subscript. 6, record 1, English, - acidity%20constant
Record 1, French
Record 1, Domaine(s)
- Électrolyse (Électrocinétique)
- Électrochimie
- Chimie
Record 1, Main entry term, French
- constante d'acidité
1, record 1, French, constante%20d%27acidit%C3%A9
correct, feminine noun
Record 1, Abbreviations, French
- Ka 2, record 1, French, Ka
correct, see observation
Record 1, Synonyms, French
- constante de dissociation acide 3, record 1, French, constante%20de%20dissociation%20acide
correct, feminine noun
- constante de dissociation d'un acide 3, record 1, French, constante%20de%20dissociation%20d%27un%20acide
correct, feminine noun
- constante d'un acide 3, record 1, French, constante%20d%27un%20acide
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
La constante d'équilibre, Kan, représente la constante d'équilibre correspondant à la dissociation du n [ème] proton, à partir d'un acide électriquement chargé ou neutre à définir. 4, record 1, French, - constante%20d%27acidit%C3%A9
Record number: 1, Textual support number: 1 CONT
Relation entre constantes de dissociation acide et basique. [...] Il doit exister une relation entre Ka etb si l'acide et la base concernés appartiennent au même couple acido-basique [...] 3, record 1, French, - constante%20d%27acidit%C3%A9
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 (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. 5, record 1, French, - constante%20d%27acidit%C3%A9
Record number: 1, Textual support number: 2 OBS
Ka : la lettre «a» de ce symbole s'écrit en indice. 6, record 1, French, - constante%20d%27acidit%C3%A9
Record 1, Spanish
Record 1, Textual support, Spanish
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