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7124099
Equilíbrio Iônico
Description
Mind Map on Equilíbrio Iônico, created by Mariana Molon on 27/11/2016.
Mind Map by
Mariana Molon
, updated more than 1 year ago
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Created by
Mariana Molon
almost 8 years ago
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Resource summary
Equilíbrio Iônico
Teorias Acido-Base
Arrhenius
Acido: gera ions H+
Base: gera ions OH-
Bronsted-Lowry
Acido: doa protons (H+)
Gera base conjugada
Base: recebe prótons (H+)
Gera ácido conjugado
Reação slide 6
Estabelecido entre uma substância e seus ions
Entre reações reversíveis
Vdireta = Vinversa # 0
Grafico slide 13
Constantes (K)
Ka/Kb = cte de ionização
Quanto > Ka/Kb > força do ácido/base
K= [A+] . [B-] ___________ [AB]
AB <-> A+ + B-
GRAU DE IONIZAÇÃO
alfa = ni/n ni = n de mols ionizados n= n mols inicial
Água
Kw = [OH-] . [H+]
Neutro: [OH-] = [H+] = 10-7
[H+ ] > [OH – ] : ÁCIDAS
[H+ ] < [OH – ]: BÁSICAS
pH = - log [H+] pOH = - log [OH-]
Hidrólise salina
ÁCIDO FORTE E BASE FRACA = solução ácida pH < 7
ÁCIDO FRACO E BASE FRACA = solução com pH > OU < 7
ÁCIDO FORTE E BASE FORTE = solução neutra pH = 7
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