acido
acido
acido
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Equilibri Acido-Base<br />
ACIDO 1<br />
+ BASE 2 BASE 1<br />
+ ACIDO 2<br />
K C<br />
= [BASE 1<br />
][ACIDO 2<br />
]/[BASE 2<br />
][ACIDO 1<br />
]<br />
E.g.:<br />
H 2<br />
O (l)<br />
+ NH 3(aq)<br />
OH - (aq) + NH 4 + (aq)<br />
Acido 1<br />
Base 2<br />
Base 1 Acido 2<br />
K C<br />
= [OH - ][NH 4+<br />
]/[NH 3<br />
][H 2<br />
O]<br />
CH 3<br />
COOH (aq)<br />
+ H 2<br />
O (l)<br />
CH 3<br />
COO - (aq) + H 3 O+ (aq)<br />
Acido 1 Base 2<br />
Base 1 Acido 2<br />
K C<br />
= [CH 3<br />
COO - ][H 3<br />
O + ]/[CH 3<br />
COOH][H 2<br />
O]<br />
H 2<br />
O (l)<br />
+ H 2<br />
O (l)<br />
OH - (aq) + H 3 O+ (aq)<br />
H 2<br />
O e’ anfiprotica, autoionizza.<br />
Acido 1<br />
Base 2<br />
Base 1<br />
Acido 2<br />
(non è l’unica specie)<br />
K C<br />
= [OH - ][H 3<br />
O + ]/[H 2<br />
O] 2