Chemical Forums
Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: LeeH on December 06, 2005, 07:31:04 PM

I know how to calculate this question with Kf value that I have but i cant seem to find the aY4 value. I have a list of the values for pH of 0,1,2,3,4 but not for a number iwth a decimal. I could really use some help.
thanks
heres the question
Calculate the conditional formation constant for the formation of the EDTA complex of Ca2+ at a pH of 8.6

Not sure what you are talking about  do you need Ka1, Ka2, Ka3 and Ka4? If so, download my BATE, demo version database contains all EDTA dissociation constants.

The conditional formation constant is k' = (alphaY4)(Kf)
I know the Kf value which is 4.9E10.
I know the K1, k2, k3, k4, k5 k6 values i just cant seem to get a right answer from the equation used to find the alphaY4 value

I figured it out.
thanks anyways