Dissolve Tris (FW=121.14 g, pKa=8.07) 12.43 g and Tris.HCl (FW=157.60 g) in water, add 12.0mL of 1.00 M HCl, and Add water and set the volume of the solution to 1L. Find the pH of the solution.
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Dissolve Tris (FW=121.14 g, pKa=8.07) 12.43 g and Tris.HCl (FW=157.60 g) in water, add 12.0mL of 1.00 M HCl, and Add water and set the volume of the solution to 1L. Find the pH of the solution.
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- Students Mola and Rity were tasked to analyze the acidity of a 10.0-mL fermented milk sample diluted with water in a 250-mL volumetric flask. Mola obtained a 15.0-mL aliquot of this solution, diluted it to 50.0 mL, and then titrated this diluted sample. Titration data were given to Rity and she found out that the 50.0-mL diluted sample contains 0.21 mmol of lactic acid. MW: Lactic Acid (90.08) a. What is the lactic acid concentration (in M) of the titrated sample? b. Determine the lactic acid content (in M) of the 10.0-mL fermented milk sample. c. What is the lactic acid concentration (in %w/v) of the 10.0-mL fermented milk sample?A.) In the laboratory, a general chemistry student measured the pH of a 0.589 M aqueous solution of hydroxylamine, NH2OH to be 9.848.Use the information she obtained to determine the Kb for this base.Kb(experiment) = B.)What is the pH of a 4.96×10-2 M aqueous solution of potassium fluoride, KF? (Ka for HF = 7.2×10-4)pH =Calculate the pH in the flask of 0.08 M HClO (aq) after adding a total of 20 mL of 0.10 M NaOH. At the equivalence point, the remain species will be the conjugate base of HClO. Find the pH of the solution. Use Kb and the appropriate RICE table. pKa = 7.5 Ka=3.4x10-8
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