6. Zuren en basen
6. Zuren en basen
6. Zuren en basen
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Zure buffer<br />
• Berek<strong>en</strong> de pH van 122 ml [HAc] 0=0,1 mol/l<br />
• Voeg 1 g NaAc toe <strong>en</strong> herberek<strong>en</strong> de pH<br />
• HAc + H 2O H 3O + + Ac -<br />
• NaAc Na + + Ac -<br />
• K Z = [H 3O + ] e.[Ac - ] e/[HAc] e<br />
= [H 3O + ] e.[NaAc] 0/[HAc] 0<br />
• Door toevoeging van Ac- daalt [H 3O + ] e<br />
• Berek<strong>en</strong> de pH na 10 x <strong>en</strong> 100 x verdunning
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