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(b) An aqueous solution of propanone (acetone, 1) of total volume 0.120 mL was analysed by quantitative 1H NMR, using the CH protons of (E)-butenedioic acid (fumaric acid, 2) to provide an internal standard. A stock solution of 2 with concentration = 10.00 x 10-3 mol L-1 was prepared by dissolving pure solid 2 in deuterium oxide (D₂O). The solution of 1 was mixed with a 0.400 mL aliquot of the stock solution of 2 and the 400 MHz 1H NMR spectrum of the mixture was recorded (see Table 2 below). H³C‍ || CH3 1 HO₂C H C=C H CO₂H 2 SH (D2O, 400 MHz) Multiplicity Relative peak area (integration) Assignment 2.22 4.80 singlet broad singlet 4.50 6.53 singlet not determined 1.00 CH3 groups of 1 OH from HOD CH groups of 2 Table 2. ¹H NMR data for the mixture of aqueous propanone (1) and the internal standard (2). (i) Calculate the mass of propanone (1) contained in the original aqueous solution.

(b) An aqueous solution of propanone (acetone, 1) of total volume 0.120 mL was analysed by quantitative 1H NMR, using the CH protons of (E)-butenedioic acid (fumaric acid, 2) to provide an internal standard. A stock solution of 2 with concentration = 10.00 x 10-3 mol L-1 was prepared by dissolving pure solid 2 in deuterium oxide (D₂O). The solution of 1 was mixed with a 0.400 mL aliquot of the stock solution of 2 and the 400 MHz 1H NMR spectrum of the mixture was recorded (see Table 2 below). H³C‍ || CH3 1 HO₂C H C=C H CO₂H 2 SH (D2O, 400 MHz) Multiplicity Relative peak area (integration) Assignment 2.22 4.80 singlet broad singlet 4.50 6.53 singlet not determined 1.00 CH3 groups of 1 OH from HOD CH groups of 2 Table 2. ¹H NMR data for the mixture of aqueous propanone (1) and the internal standard (2). (i) Calculate the mass of propanone (1) contained in the original aqueous solution.

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Chemistry
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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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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(b) An aqueous solution of propanone (acetone, 1) of total volume 0.120 mL was analysed by quantitative 1H NMR, using the CH protons of (E)-butenedioic acid (fumaric acid, 2) to provide an internal standard. A stock solution of 2 with concentration = 10.00 x 10-3 mol L-1 was prepared by dissolving pure solid 2 in deuterium oxide (D₂O). The solution of 1 was mixed with a 0.400 mL aliquot of the stock solution of 2 and the 400 MHz 1H NMR spectrum of the mixture was recorded (see Table 2 below). H³C‍ || CH3 1 HO₂C H C=C H CO₂H 2 SH (D2O, 400 MHz) Multiplicity Relative peak area (integration) Assignment 2.22 4.80 singlet broad singlet 4.50 6.53 singlet not determined 1.00 CH3 groups of 1 OH from HOD CH groups of 2 Table 2. ¹H NMR data for the mixture of aqueous propanone (1) and the internal standard (2). (i) Calculate the mass of propanone (1) contained in the original aqueous solution.
Transcribed Image Text:(b) An aqueous solution of propanone (acetone, 1) of total volume 0.120 mL was analysed by quantitative 1H NMR, using the CH protons of (E)-butenedioic acid (fumaric acid, 2) to provide an internal standard. A stock solution of 2 with concentration = 10.00 x 10-3 mol L-1 was prepared by dissolving pure solid 2 in deuterium oxide (D₂O). The solution of 1 was mixed with a 0.400 mL aliquot of the stock solution of 2 and the 400 MHz 1H NMR spectrum of the mixture was recorded (see Table 2 below). H³C‍ || CH3 1 HO₂C H C=C H CO₂H 2 SH (D2O, 400 MHz) Multiplicity Relative peak area (integration) Assignment 2.22 4.80 singlet broad singlet 4.50 6.53 singlet not determined 1.00 CH3 groups of 1 OH from HOD CH groups of 2 Table 2. ¹H NMR data for the mixture of aqueous propanone (1) and the internal standard (2). (i) Calculate the mass of propanone (1) contained in the original aqueous solution.
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