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Complex Formation Equilibria

Posted: Tue Mar 26, 2024 6:08 pm
by AlChem
Hello everyone, this is my first message in the forum.
I am looking for help about the study of complex formation equilibria, since when doing class exercises on the subject, the result I get is not close to what that should give.
For example, find the concentration Ce3+ and CeY- in a 10-2 M solution of Ce(III) and EDTA, buffered at pH 9, taking into account side reactions.
The results should be [CeY-] = 10-2 M and [Ce3+] = 2ยท10-10. :|
Maybe I should rest a bit and look at it more calmly, but it's something I keep thinking about.
Any bibliography I can find on the net or at the university library on the subject?
Thanks in advance. :D
Alex

Re: Complex Formation Equilibria

Posted: Tue Mar 26, 2024 10:58 pm
by ChenBeier
You need the complex building constant for CeY-.

Ce 3+ + Y 4- => CeY-

K = CeY-/(Ce 3+ *Y 4-)

pH dependency