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Liquid-liquid extraction of weak electrolytes

Posted: Fri Mar 22, 2024 2:34 am
by Neon
Im asking for help:

Calculate the distribution coefficient D if the partition coefficient K = 50.0 for the benzene-water system if the pKb of the base (solute) is 5 and pH is 8.00.

Thank you!

Re: Liquid-liquid extraction of weak electrolytes

Posted: Fri Mar 22, 2024 3:32 am
by ChenBeier
LogD = logK +log[1/(1 +10^(14-pkb-pH))]

https://www.chemeurope.com/en/encyclope ... cient.html