FTIR & MP Lab Report S22

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School

University of Michigan, Dearborn *

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Course

227

Subject

Chemistry

Date

Dec 6, 2023

Type

docx

Pages

5

Uploaded by MegaStingray2012

Report
Chemistry 227 Infrared Spectroscopy & Melting Point Lab Report Name: Show full calculations as requested. Answers must be TYPED IR Experiment Part I A. Unknown Code : B. Unknown Empirical and Molecular Formula : Show full calculations for empirical and molecular formula. Include degrees of unsaturation and at least three possible structural isomers. Write final answers in the table below. The chemical drawings should be pasted into the lab report and drawn in a program such as ChemDraw. Empirical Formula Molecular Formula
C. Attach the IR spectrum of the unknown solid sample. Clearly identify and label the characteristic peaks on the spectrum, and then TABULATE the data showing the peak number and the bond associated with that peak. Note: Don't try to interpret every peak. Only report the important functional group signals. D. Discussion: Justify how the IR data supports the identity of the unknown solid. NOTE : the phrase it matches with literature " is not good enough! Of the drawn isomers, which match best and why. Comparing your spectrum to a literature spectrum is always good confirmation. E. Conclusion Name of Unknown: Chemical Structure: Page 2 of 5
Part II A. Attach the IR spectrum and list the main peaks of the assigned known liquid sample. Compound Name of Assigned Sample: Chemical Structure: B. List and Briefly explain the trend of the C=O bands obtained for the class data of the compounds that were put on the board. How does the trend compare to reference samples? Explain why the different carbonyl groups have different IR absorption frequencies and how this relates to their polarity and functional groups. Page 3 of 5
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