To a 25.00 mL volumetric flask, a lab technician adds a 0.425 g sample of a weak monoprotic acid, HA, and dilutes to the mark with distilled water. The technician then titrates this weak acid solution with 0.0810 M KOH. She reaches the endpoint after adding 48.89 mL of the KOH solution. Determine the number of moles of the weak acid in the solution. moles of weak acid: mo Determine the molar mass of the weak acid. molar mass = g/mc After the technician adds 18.61 mL of the KOH solution, the pH of the mixture is 4.65. Determine the pKa of the weak acid. pKa =
To a 25.00 mL volumetric flask, a lab technician adds a 0.425 g sample of a weak monoprotic acid, HA, and dilutes to the mark with distilled water. The technician then titrates this weak acid solution with 0.0810 M KOH. She reaches the endpoint after adding 48.89 mL of the KOH solution. Determine the number of moles of the weak acid in the solution. moles of weak acid: mo Determine the molar mass of the weak acid. molar mass = g/mc After the technician adds 18.61 mL of the KOH solution, the pH of the mixture is 4.65. Determine the pKa of the weak acid. pKa =
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...
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Transcribed Image Text:To a 25.00 mL volumetric flask, a lab technician adds a 0.425 g sample of a weak monoprotic acid, HA, and dilutes to the mark
with distilled water. The technician then titrates this weak acid solution with 0.0810 M KOH. She reaches the endpoint after
adding 48.89 mL of the KOH solution.
Determine the number of moles of the weak acid in the solution.
moles of weak acid:
mol
Determine the molar mass of the weak acid.
molar mass =
g/mol
After the technician adds 18.61 mL of the KOH solution, the pH of the mixture is 4.65. Determine the pK, of the weak acid.
pKa
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