Note that the pKa of gamma-carboxyl group of glutamic acid is: 4.3. Calculate the pH at...
The pK of the side chain carboxyl group of glutamic acid is 4.3. What is the ratio of charged to uncharged forms of this group at pH 7.3? explain with work
Draw the structure of Glutamic Acid at each pka (ex. which group is deprotonated at each pH).
The activity of an enzyme requires a glutamic acid to display its −COOH functional group in the protonated state. Suppose the pKa of the −COOH group is 4.07. At what pH will the enzyme show 82% of maximal activity?
In an aqueous solution of a certain acid with pKa = 7.33 the pH is 4.59. Calculate the percent of the acid that is dissociated in this solution. Round your answer to 2 significant digits.
1. Phosphoric acid, H3PO4 is a triprotic acid with pKsı = 2.14 and pKa = 7.20 and pkas 12.38. Draw the titration curve predicted for 0.1 M phosphoric acid titrated by 0.1 M NaOH. (Assume the volume of acid is 20. mL) 2. The pKb of the acetate ion is 9.25. a. Using this information, calculate the pKa of acetic acid. b. Using the Henderson-Hasselbalch equation, calculate the ratio of the concentration of acetate to acetic acid required to produce...
1. (a) Draw the structure of L-glutamic acid and show its one letter and three letter code. (1 pt) (b) Show the calculation for its isoelectric point. (HINT: Check the pKa of the R group also.) (2 pt) (c) Draw the forms of glutamic acid at pH 1, 6 and 10. (3 pt) (d) To which electrode would glutamic acid migrate in electrophoresis at pH 7 buffer, the anode (+) or cathode (-)? (1 pt) (e) MSG (monosodium glutamate) is...
A. Calculate the pH of a solution containing 0.2M lactic acid (pKa = 3.86) B. Calculate the pH of a solution of 1x10^-9 M HCl (strong acid) in distilled water. Show your work.
What is the pH of alanine solution in which a-amino group is one-half dissociated? pKa values are pK (-COOH) 2.43 and pK(-NH3+) 9.69, respectively.
PART A. Determine the pH of a 9.553 mM weak acid solution that has a pKa of 8.83 PART B. Calculate the pH of a 319 mM weak base solution with a pKb of 9.04. PART C. Determine the pKa of a weak acid solution that has an initial concentration of 0.334 M and a pH of 4.54. Hint: You know the pH of the solution, so you can easily determine x in your ICE table PART D. Calculate the...
calculate the pH of a 1M weak acid solution for which pKa=6