chap6chimie.py

Created by gbbirdieputt

Created on March 07, 2024

695 Bytes

acide et base forte/faible réagit avec EAU
de manière totale ou quasi totale

acide fort/faible
  AH+H2O=A-+H3O+
base fort/faible
  B-+H2O=BH+HO-
  
  xf=100 pourcent fort
  xfmax=95 pourcent faible
  
  exemple
    HCl+H2O=Cl-+H3O+
    C2H5O-+H2O=C2H5OH+HO-
    
Ka=((A-/C0)*(H3O+/C0))/(AH/C0)*1

Qr=((C/C0)**c*(D/C0)**d)/((A/C0)**a*(B/C0)**b)

pKa=-log Ka
Ka= 10**-pKa
0<pKa<14

eau=ampholyte
autoprotolyse de l'eau

H2O+H20=H3O++HO-

produit ionique eau
Ke= (HO-*H3O+)/1(=10**-24)
pKe= -log Ke = 14 à 25 Co

acide chlorydrique= H3O+Cl-
acide nitrique= H3O+NO3+
acide éthanoique= CH3COOH
soude Na+HO-
ammoniac NH3

AH>A- 0-pKa
AH<A- pKA-14

pH=6,37+log (HCO3-)/(H2CO3)

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