6. Zuren en basen
6. Zuren en basen
6. Zuren en basen
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Zuur-basekoppels (NH 3)<br />
• NH 3 + H 2O NH 4 + + OH -<br />
K B = [OH - ] e.[NH 4 + ]e /[NH 3] e = 1,78.10 -5<br />
• NH 4 + + H2O H 3O + + NH 3<br />
K Z = [H 3O + ] e.[NH 3] e /[NH 4 + ]e<br />
• K B . K Z = [H 3O + ] e.[OH - ] e = K W = 10 -14<br />
⇒ K Z = 5,62.10 -10<br />
• E<strong>en</strong> zwakke base is geconjugeerd met e<strong>en</strong><br />
zwak zuur
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