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Title: what is the relationship between acid strength and acid dissociation constant and its pKa value? Post by: sofargone on Sep 18, 2012 what is the similarities between them
Title: what is the relationship between acid strength and acid dissociation constant and its pKa value? Post by: linasen on Sep 18, 2012 as an acid gets weaker, its Ka gets smaller & its pKa gets larger
ie acetic acid has a Ka = 1.8 e-5 whose pKa is 4.74 a weaker acid like HCN has a Ka of 4.9 e-10, whose pKa = 9.30 ================================ weak acids have small Ka's to X 10^- something the p of that K is essentially that exponent with the sign changed so the have smalll K's & large pKa 's |