FUNDAMENTALS OF BIOCHEMISTRY-ACCESS
5th Edition
ISBN: 9781119498742
Author: Voet
Publisher: WILEY
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Chapter 2, Problem 13E
Summary Introduction
To calculate: The pH of a 200mL solution of pure water with which 50mL of 1mM HCl has been added.
Concept introduction: pH of a solution is denoted as the negative logarithm of the hydrogen ion concentration of that solution. The pH in a solution decreases as H+ ion concentration increases in the solution. The pH of a neutral aqueous solution is 7, if it exceeds 7 it is a base, if it below 7 it is an acid.
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Draw the predominant form of
glutamic acid at pH = 8.4. The pKa
of the side chain is 4.1. Include
proper stereochemistry.
HO
H2N
OH
pH = 8.4
How would I draw this?
Calculate the standard change in Gibbs free energy, AGrxn, for the given reaction at 25.0 °C. Consult the table of
thermodynamic properties for standard Gibbs free energy of formation values.
NH,Cl(s) →NH; (aq) + C1 (aq)
AGrxn
-7.67
Correct Answer
Determine the concentration of NH+ (aq) if the change in Gibbs free energy, AGrxn, for the reaction is -9.27 kJ/mol.
6.49
[NH+]
Incorrect Answer
kJ/mol
M
Chapter 2 Solutions
FUNDAMENTALS OF BIOCHEMISTRY-ACCESS
Ch. 2 - Prob. 1ECh. 2 - 2. Rank the water solubility of the following...Ch. 2 - 3. Approximately how many molecules of H2O are in...Ch. 2 - 4. An E. coli cell contains about 2.6 × 108 ions,...Ch. 2 - Prob. 5ECh. 2 - Prob. 6ECh. 2 - 7. Describe what happens when a dialysis ban...Ch. 2 - 8. A red blood cell his an internal salt...Ch. 2 - 9. Draw the structures of the conjugate bases of...Ch. 2 - Prob. 10E
Ch. 2 - 11. Indicate the ionic species of ammonia that...Ch. 2 - 12. Indicate the ionic species of phosphoric acid...Ch. 2 - 13. Calculate the pH of a 200 mL solution of pure...Ch. 2 - 14. Calculate the pH of a 1 L solution containing...Ch. 2 - 15. A solution is nude by mixing 50 mL of 2.0 M...Ch. 2 - 16. What is the pK of the weak acid HA if a...Ch. 2 - 17. (a) At any instant, how many water molecules...Ch. 2 - 18.
Would phosphoric acid or succinic acid be a...Ch. 2 - 19. Use Coulomb’s law (Equation 2-1) to explain...Ch. 2 - Prob. 20CQCh. 2 - 21. Certain C—H groups can form weak hydrogen...Ch. 2 - 22. Explain why water forms nearly spherical...Ch. 2 - Prob. 23CQCh. 2 - 24. You have a 5 ml. sample of a protein in 0.5 M...Ch. 2 - 25. Patients with kidney failure frequently...Ch. 2 - 26. The kidneys function to eliminate ammonia from...Ch. 2 - Prob. 27CQCh. 2 - Prob. 28CQCh. 2 - 29. How many grams of sodium succinate (formula...Ch. 2 - 30. Estimate the volume of a solution of 5 M NaOH...Ch. 2 - 31. You need a buffer at pH 7.5 for use in...Ch. 2 - Prob. 32CQCh. 2 - MORE TO EXPLORE Compare and contrast the...
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