c11_acide_base.py

Created by anaali

Created on March 14, 2024

833 Bytes


xf = experimental
xmax= theorique
ph=14 => basique
ke = constante acidité eau
ke= 10**-14 à 25°
pke=-log Ke
Ke =10**-pke

Acide:
  -fort totale, t=1, xf=xmax
  ph=-log C
  -faible: non totale t<1 xf<xmax
  pH=/ -log C
Base:
  -forte totale t=1 xf=xmax 
  ph= 14+logC
  - faible t<1 xf<xmax 
  ph=/ +14+log C
  
Ka= Constante d'equlibre lie a
reaction entre un acide et de l'eau 
pkA=-log KA
KA =10**-pkA
diagramme = acide, base 
Solution tampon = solution dont 
le pH varie peu par dilution 
ou par ajout de petites quant 
d'acides ou de base

ph=pKa + log ([A-]/[AH])

[A-]/[AH]=ka/[H3O+]
=10**-pka/10**-ph
+acide fort, +pka faible +kA grand
inverse base forte

à 0 [Ah]en hau, [A- ] en bas

t=xf/xmax
Qr,i = quotient de reaction
pareil Ka
Qr,i <K => sens direct
K=Q,ri => equilibre
Qr,i >L => sens indirect

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