ANALYSIS14. Prepare a drying-apparatus that uses the water aspirator on the bench. Transfer the Büchner with your solid(crude or recrystallized) to this setup. Dry the solid for approximately 10 minutes. Break the solid clumpsapart every now and then with a spatula to accelerate the drying process.15. Weigh the dried solid so as to calculate a reaction yield for your report.16. Demonstrate the identity and purity of your acetaminophen product (crude and purified, if you were able torecrystallize it) using:TLC: Dissolve a small amount (~10 mg; the tip of a spatula) in a small volume of ethyl acetate (~1-2 mL)in a test tube before spotting on your plate and eluting.Melting point analysis: Pure acetaminophen melts at 169 °C. Pack a small amount (~ 2 mm of height)of solid in a melting point capillary, and record a melting point using the appropriate apparatus. Heatrapidly at first, but slow down when you get near (~20° below) the target melting point to obtain a moreaccurate measurement.6) A melting "point" analysis is a bit of a misnomer; how so? What do we measure whendoing such an analysis? Why the difference? |

Answered: A melting "point analysis is a bit of a…

A melting "point analysis is a bit of a misnomer; how so? What do we measure when doing such an analysis? Why the difference? |

Chemistry

10th Edition

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

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

ANALYSIS
14. Prepare a drying-apparatus that uses the water aspirator on the bench. Transfer the Büchner with your solid
(crude or recrystallized) to this setup. Dry the solid for approximately 10 minutes. Break the solid clumps
apart every now and then with a spatula to accelerate the drying process.
15. Weigh the dried solid so as to calculate a reaction yield for your report.
16. Demonstrate the identity and purity of your acetaminophen product (crude and purified, if you were able to
recrystallize it) using:
TLC: Dissolve a small amount (~10 mg; the tip of a spatula) in a small volume of ethyl acetate (~1-2 mL)
in a test tube before spotting on your plate and eluting.
Melting point analysis: Pure acetaminophen melts at 169 °C. Pack a small amount (~ 2 mm of height)
of solid in a melting point capillary, and record a melting point using the appropriate apparatus. Heat
rapidly at first, but slow down when you get near (~20° below) the target melting point to obtain a more
accurate measurement.
6) A melting "point" analysis is a bit of a misnomer; how so? What do we measure when
doing such an analysis? Why the difference? |

Expert Solution

Step 1

Melting point analysis helps in analyzing the purity of the compound.

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