Macmillan Learning Attempt 1 To a 25.00 mL volumetric flask, a lab technician adds a 0.125 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 0.0866 M KOH. She reaches the endpoint after adding 47.47 mL of the KOH solution. Determine the number of moles of the weak acid in the solution. moles of weak acid: 0.00369441 Incorrect Answer Determine the molar mass of the weak acid. molar mass= 33.8359 Incorrect Answer mol g/mol After the technician adds 17.39 mL of the KOH solution, the pH of the mixture is 5.33. Determine the pKa of the weak acid. 4.68858 pKa = Incorrect Answer
Macmillan Learning Attempt 1 To a 25.00 mL volumetric flask, a lab technician adds a 0.125 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 0.0866 M KOH. She reaches the endpoint after adding 47.47 mL of the KOH solution. Determine the number of moles of the weak acid in the solution. moles of weak acid: 0.00369441 Incorrect Answer Determine the molar mass of the weak acid. molar mass= 33.8359 Incorrect Answer mol g/mol After the technician adds 17.39 mL of the KOH solution, the pH of the mixture is 5.33. Determine the pKa of the weak acid. 4.68858 pKa = Incorrect Answer
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter16: Reactions Between Acids And Bases
Section: Chapter Questions
Problem 16.103QE: A bottle of concentrated hydroiodic acid is 57% HI by weight and has a density of 1.70 g/mL. A...
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<Question 7 of 20 >
Attempt 1
To a 25.00 mL volumetric flask, a lab technician adds a 0.125 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 0.0866 M KOH. She reaches the endpoint after
adding 47.47 mL of the KOH solution.
Determine the number of moles of the weak acid in the solution.
moles of weak acid:
0.00369441
Incorrect Answer
Determine the molar mass of the weak acid.
molar mass=
33.8359
Incorrect Answer
mol
g/mol
After the technician adds 17.39 mL of the KOH solution, the pH of the mixture is 5.33. Determine the pKa of the weak acid.
4.68858
pKa =
Incorrect Answer
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