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Syrer og baser

Lidt om syrer og basers ligevægt og pH-værdi.

QuestionAnswer
Hvad er syrestyrken, Ks? Ligevægtskonstanten for syrens reaktion med vand.
Hvad er basestyrken, Kb? Ligevægtskonstanten for basens reaktion med vand.
Hvad sker der hvis man gange Ks og Kb? Så får man: [H_3 O^+ ]·[OH^-], hvilket er vands ionprodukt = Kv.
Hvad er PKs og PKb, og hvad får man altid hvis man plusser de to? Minus log til syrestyrken, og minus log til basestyrken. PKs + PKb = 14
Hvad gælder for disse værdier af Pk: <0, 0-4, 4-7, 7-10, 10-14, >14? pK < 0 = stærk (base eller syre) 0 < pK > 4 = middelstærk 4 < pK > 10 = svag 10 < pK > 14 = meget svag pK > 14 = uhyre svag
Created by: Lakridsnn
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