Henderson-Hasselbalch in the Buffer Region

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Samantha Rundle 3K
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Henderson-Hasselbalch in the Buffer Region

Postby Samantha Rundle 3K » Fri Dec 04, 2015 10:11 pm

I understand that in titrations, at the half stoichiometric point the pH=pKa, so that is when the the Henderson Hasselbalch equation should be used, but can't we use it for the whole buffer region of a titration, or is that wrong because [HA] does not equal [A-]?

Thanks!

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Re: Henderson-Hasselbalch in the Buffer Region

Postby Chem_Mod » Fri Dec 04, 2015 10:15 pm

You may use the H-H equation in buffer regions even when [HA] is not equal to [A-].


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