Why is the concentration ratio the same for the calculation of pKa2? "The pKa values of a compound with two ionizable groups are pK1 = 4.10 and pK2 between 7 and 10. A biochemist has 10 mL of a 1.0 M solution of this compound at a pH of 8.00. She adds 10.0 mL of 1.00 M HCl, which changes the pH to 3.20. What is pK2?"
Why is the concentration ratio the same for the calculation of pKa2? "The pKa values of a compound with two ionizable groups are pK1 = 4.10 and pK2 between 7 and 10. A biochemist has 10 mL of a 1.0 M solution of this compound at a pH of 8.00. She adds 10.0 mL of 1.00 M HCl, which changes the pH to 3.20. What is pK2?"
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
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Problem 105QRT: Apatite, Ca5(PO4)3OH, is the mineral in teeth.
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I was given an excellent explanation to the following question, but I don't understand one part of the expert answer. Why is the concentration ratio the same for the calculation of pKa2?
"The pKa values of a compound with two ionizable groups are pK1 =
4.10 and pK2 between 7 and 10. A biochemist has 10 mL of a 1.0 M solution of this compound at a pH of 8.00. She adds 10.0 mL of
1.00 M HCl, which changes the pH to 3.20. What is pK2?"
I included the original answer. Thank you very much for your help.
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