6. Zuren en basen

6. Zuren en basen 6. Zuren en basen

10.09.2013 Views

Oefeningen p. 108 • Reactievergelijkingen + aanduiding Brønstedzuren en Brønstedbasen : • HNO 3 • H 2CO 3 • KOH • Na 2S • AlCl 3 • (NH 4) 2SO 4 • Amfolyten: zowel zuur als base

Ionisatie van water • Water is een amfolyt: H 2O + H 2O OH - + H 3O + H + • 24°C : 1/555.10 6 • [H 3O + ] = [OH - ] = 10 -7 mol/l • pH = -log [H 3O + ] of [H 3O + ] = 10 -pH pOH = -log [OH - ] of [OH - ] = 10 -pOH • Zure oplossing : pH < 7 of [H 3O + ] > 10 -7 Basische oplos.: pH > 7 of [H 3O + ] < 10 -7

Ionisatie van water<br />

• Water is e<strong>en</strong> amfolyt:<br />

H 2O + H 2O OH - + H 3O +<br />

H +<br />

• 24°C : 1/555.10 6<br />

• [H 3O + ] = [OH - ] = 10 -7 mol/l<br />

• pH = -log [H 3O + ] of [H 3O + ] = 10 -pH<br />

pOH = -log [OH - ] of [OH - ] = 10 -pOH<br />

• Zure oplossing : pH < 7 of [H 3O + ] > 10 -7<br />

Basische oplos.: pH > 7 of [H 3O + ] < 10 -7

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