The active ingredient in Toddlerium is the diprotic acid isabellic acid (molar mass = 136.5 g/mol,...

 

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The active ingredient in Toddlerium is the diprotic acid isabellic acid (molar mass = 136.5 g/mol, treat as exact value). You titrate a 8.00-g sample of Toddlerium with 0.1223M sodium hydroxide (standardized). The resulting titration is shown below. Assume the sample is completely titrated - in other words, adding more titrant would not further increase the pH. NaOH pH (mL) 0.00 1.00 2.00 3.00 4.00 14.00 3.50 3.55 4.34 4.72 5.01 •lsabeilic Acid OFirst Derivative 12.00 .• 3.00 10.00 2.50 5.23 5.50 5.87 6.33 6.54 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 16.00 8.00 2.00 6.00 1.50 7.09 740 7.65 7.90 8.20 8.72 11.00 13.12 13.19 13.22 13.28 13.29 4.00 1.00 2.00 0.50 0.00 O 0.00 88 8 8 8 8 88 8 8 8 8 88 8 8 8 88 88 9 17.00 18.00 19.00 20.00 Volume delivered of 0.1223M NAOH (mL) a. (4) Provide the volumes of the two equivalence points. Equivalence point # 1: ml Equivalence point #2: mL b. (4) Isabellic acid is a diprotic acid. What is the first pK. of isabellic acid? Show all work for full credit. pKa: C. (6) What is the mass percent of isabellic acid in the dose of Toddlerium? ApHAmL O 00'21 Hd The active ingredient in Toddlerium is the diprotic acid isabellic acid (molar mass = 136.5 g/mol, treat as exact value). You titrate a 8.00-g sample of Toddlerium with 0.1223M sodium hydroxide (standardized). The resulting titration is shown below. Assume the sample is completely titrated - in other words, adding more titrant would not further increase the pH. NaOH pH (mL) 0.00 1.00 2.00 3.00 4.00 14.00 3.50 3.55 4.34 4.72 5.01 •lsabeilic Acid OFirst Derivative 12.00 .• 3.00 10.00 2.50 5.23 5.50 5.87 6.33 6.54 5.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 16.00 8.00 2.00 6.00 1.50 7.09 740 7.65 7.90 8.20 8.72 11.00 13.12 13.19 13.22 13.28 13.29 4.00 1.00 2.00 0.50 0.00 O 0.00 88 8 8 8 8 88 8 8 8 8 88 8 8 8 88 88 9 17.00 18.00 19.00 20.00 Volume delivered of 0.1223M NAOH (mL) a. (4) Provide the volumes of the two equivalence points. Equivalence point # 1: ml Equivalence point #2: mL b. (4) Isabellic acid is a diprotic acid. What is the first pK. of isabellic acid? Show all work for full credit. pKa: C. (6) What is the mass percent of isabellic acid in the dose of Toddlerium? ApHAmL O 00'21 Hd