Question

1,2,and 3 please!!

Post-Lab Questions 1. The pKa value for the carboxylic structure of acetic acid at (a) pH- 1, (b) pH-7, and (c) p-13 acid group in acetic acid is 4.75. Write the predominant 2. Fill in the following table to show the theoretical results for the titration of 1.0 L of 0.20 M acetic acid by adding the designated amount of solid (no volume change) potassium hydroxide, KOH. Show a sample calculation of your work below. pH IH'T Amount of NaOH Amount of acetic added 0.0 moled remaining 0.010 mol 0.020 mol 0.030 mol 0.040 mol 3. Write the predominant structure of glycylglycine at (a) pH 1.5 (the approximate pH of stomach acid), and (b) pH-7.4 (normal blood pH) Write the two chemical equations that show the titration reactions of the carboxylic acid group and the protonated amino group of glycylglycine with sodium hydroxide. 4.

Answer 1

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