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sofargone sofargone
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11 years ago
what is the similarities between them
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11 years ago
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
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