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Specialty Chemistry Forums => Biochemistry and Chemical Biology Forum => Topic started by: liravsc on November 16, 2021, 06:25:27 PM

Title: Calculate the pKa
Post by: liravsc on November 16, 2021, 06:25:27 PM

"Find the pKa for an HA acid. The HA and A^- concentrations are, respectively, 0.075 and 0.025. The pH is 6."

I used Henderson-Hasselbach's equation and got 6.477. Just want to check if that was correct. Studying for an exam after arriving 1 month late to class  :'(

Thank you.

Title: Re: Calculate the pKa
Post by: Borek on November 17, 2021, 02:54:42 AM

Logic (and the value) is OK, you can get punished for significant digits though.