Macmillan Learning 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. 33.8359 molar mass= 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 PK₁ = Incorrect Answer
Macmillan Learning 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. 33.8359 molar mass= 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 PK₁ = Incorrect Answer
Chapter31: Introduction To Analytical Separations
Section: Chapter Questions
Problem 31.17QAP
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