Question

Given the pKa's for EDTA (listed below) , what percentages of HY3 and Y4- will be...

Given the pKa's for EDTA (listed below) , what percentages of HY3 and Y4- will be present when pH = 10.0?

pK1= 0.00 pK2=1.50 pK3=1.99 pK4= 2.69 pK5= 6.13 pK6= 10.37

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Answer #1

EDTA is a tetraprotic acid which can be represented as H4Y. Here we are talking about fourth ionization of this molecule.

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