Weak Acids
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Weak Acids
In my textbook, it says some weak bases are the anions of weak acids, for example F- in HF. But I thought that the conjugate base of weak acids are strong bases?
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GrahamKemp
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- Joined: Mon Mar 19, 2012 10:12 pm
Strength is relative.
Yes, in general the stronger an acid the weaker the conjugate base, and vice versa.
However, strength is relative. While there are acids stronger than hydroflouric, many are weaker.
At pKa=3.17, HF is a medium strength acid; and its conjugate F- is a very weak base at pKb = 10.83.
pKa + pKb = 14
http://chemed.chem.wisc.edu/chempaths/G ... s-958.html
However, strength is relative. While there are acids stronger than hydroflouric, many are weaker.
At pKa=3.17, HF is a medium strength acid; and its conjugate F- is a very weak base at pKb = 10.83.
pKa + pKb = 14
http://chemed.chem.wisc.edu/chempaths/G ... s-958.html