acidebaseforte.py

Created by klfraimbow

Created on October 20, 2022

809 Bytes


Af : HNO  / NO -   = -1,8
        3     3
HBr/Br- = -4,1
HCl/Cl- = -6,3
HI/I-  = -10

Bf : C H OH = 15,9
      2 5
NH  / NH - = 33
  3     2

Acide/Base 
fort si reagit totalment avec eau
faible si reagit partiellement

Solution ACIDE: 0-7 non inclus 
Son pH est fonction de la 
concentration H30+ (oxonium) uniquement
pas de la nature de l acide 

FORT :pH = -log [H30+] = -log Ca
car [H30+] = Ca
FAIBLE:pH =/ -log Ca
[H30+] =/ Ca 

Solution BASIQUE: 7-14 non inclus 
Son pH est fonction de la 
concentration [H30+] (oxonium) 
lié [OH-](hydroxyde) en raison 
de l autoprotolyse de l eau.
            [H30+]<<[OH-]

pH = -log[H30+]
Or [H30+]*[OH-] = 10**-14
-log[H30+] -log[OH-] = 14
pH=14 +log[OH-]

FORT :pH = 14 +log Cb
car [0H-] = Cb
FAIBLE:pH =/ 14 +log Cb
[0H-] =/ Cb 

pKa=-logKa

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