Ethylenediaminetetraacetic acid (EDTA), is one of the most popular chelating agents. It has two amino groups and four carboxylic acid groups. The structure of the most protonated form of EDTA can be designated as H6Y2* while the most deprotonated form can be designated as Y4. Given the pKa values of EDTA: 0.00, 1.50, 2.00, 2.69, 6.13, and 10.37, what is the predominating form at the following pH values? Choose from the following species: A. H,Y2+. C. H4Y D. H3Y E. H2Y2- F. HY3- G. Y4- B. H5Y* 8. At pH = 3.00 %3D Answer: [ Select] 9. At pH = 7.00 Answer: [ Select] 10. At pH = 11.00 Answer: [ Select ] >

Ethylenediaminetetraacetic acid (EDTA), is one of the most popular chelating agents. It has two amino groups and four carboxylic acid groups. The structure of the most protonated form of EDTA can be designated as H6Y2* while the most deprotonated form can be designated as Y4. Given the pKa values of EDTA: 0.00, 1.50, 2.00, 2.69, 6.13, and 10.37, what is the predominating form at the following pH values? Choose from the following species: A. H,Y2+. C. H4Y D. H3Y E. H2Y2- F. HY3- G. Y4- B. H5Y* 8. At pH = 3.00 %3D Answer: [ Select] 9. At pH = 7.00 Answer: [ Select] 10. At pH = 11.00 Answer: [ Select ] >

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

What is the pK(b) of ClO₂⁻?(b) What is the pKₐ of the dimethylammonium ion, (CH₃)₂NH₂⁺?
Which of the two salts is hydrolyzed to a greater extent under equal conditions(KCN or KClO), why? Confirm your answer by calculating the hydrolysis constant. Write ionic-molecular and molecular hydrolysis equation. What pH of the medium will be observed during the hydrolysis of this saltas (acidic or alkaline) Are solutions of these compounds dangerous to humans? Why?
we use the algebra method to find the pka values of 3.954 and the graphical method to find the pKa is 3.9533, with an accepted value of 4.0 Compare your algebraically and graphically determined pK values. Which method was moreaccurate? Why would you expect these values to be very close to each other?
75mL of a 0.2M solution of the tripeptide Ser-Cys-His is adjusted to pH=8.6. The solution is then titrated with 50mL of a 0.5M HCl. Calculate the new pH value of the tripeptide solution. (Relevant pKa values are: 2.2, 6.0 8.3, and 9.6). Once you've completed the addition of HCl to the tripeptide in part A, then you titrate the solution with 30mL of 0.6M NaOH. Calculate the final pH value of the tripeptide solution.
On the following page are three compounds, 1, 2, and 3, that have been investigated as anti-malarial candidates. Compound 1 is the "parent" molecule, and 2 and 3 are derivatives. Shown next to each molecule is (i) the enthalpy change when it binds to its target, and (ii) the dissociation constant for the molecule/target complex. Consider the structures and answer the following: AH = - 1.2 kcal/mol; Kp = 16 nM OH 1 HO AH = - 6.0 kcal/mol; Kp = 76 nM OH AH = - 5.5 kcal/mol; Kp = 0.5 nM OH 3 (i) What is the difference among 1, 2, and 3?
What effect would it have on calculated value of Ksp if insufficient time was allowed for the Ca(IO3)2 solution to reach equilibrium?
This problem uses a bicarbonate/carbonate buffer which means that we can consider the following equilibrium showing bicarbonate acting as a Brønsted acid: HCO3- + H2O ⇌ CO32- + H+ Verify that the Ka for bicarbonate is 4.7 x 10-11 and show that the pKa is 10.3 Write the appropriate Ka expression for the above equilibrium as well as the corresponding Henderson-Hasselbach equation.