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The aspirin we made in lab gad 125-133 melting point and I attached the IR. Base on this information, does it mean we made aspirin? The percent yield was also less than 50. Is that acceptable? Is this aspirin pure or not? please explain your answer.

The aspirin we made in lab gad 125-133 melting point and I attached the IR. Base on this information, does it mean we made aspirin? The percent yield was also less than 50. Is that acceptable? Is this aspirin pure or not? please explain your answer.

Chemistry
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
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The aspirin we made in lab gad 125-133 melting point and I attached the IR. Base on this information, does it mean we made aspirin? The percent yield was also less than 50. Is that acceptable? Is this aspirin pure or not?

please explain your answer.

The image shows an infrared (IR) spectroscopy graph, which displays the percentage transmittance on the y-axis and the wavenumbers (cm⁻¹) on the x-axis ranging from 4000 to 500 cm⁻¹. ### Key Features and Annotations: 1. **Broad Peak at ~3488.54 cm⁻¹:** - Labeled as "O-H" with "water" written next to it, indicating an O-H stretching vibration commonly associated with water or alcohols. 2. **Multiple Sharp Peaks between 2972.73 cm⁻¹ and 2922.38 cm⁻¹:** - These are labeled as "C-H" stretches, typically indicating the presence of alkanes or similar hydrocarbons. 3. **Weak Peak at ~2854.79 cm⁻¹:** - Also marked as a "C-H" stretch, likely relating to symmetric C-H stretching in alkyl groups. 4. **Peak at 1717.07 cm⁻¹:** - Labeled as "C=O," denoting the carbonyl group which includes aldehydes, ketones, carboxylic acids, or esters. 5. **Peak at 1600.90 cm⁻¹, 1517.98 cm⁻¹, and 1453.99 cm⁻¹:** - These peaks are indicative of C=C stretches or aromatic ring stretches. 6. **Peak at 1377.20 cm⁻¹:** - Marked as "C-O," often seen in alcohols, carboxylic acids, esters, and ethers. 7. **Multiple Peaks from 1247.87 cm⁻¹ to 617.12 cm⁻¹:** - These represent various stretching and bending vibrations, but specific functional group information isn't labeled. ### Discussion: The graph provides valuable insights into the molecular structure of the sample through identifying functional groups present. Each peak correlates to a specific bond or group vibration, and their exact positions (in cm⁻¹) help determine the components of the sample. The presence of peaks related to O-H, C-H, C=O, and C=C bonds suggests a complex organic compound possibly containing hydroxyl, carbonyl, and aromatic groups.
Transcribed Image Text:The image shows an infrared (IR) spectroscopy graph, which displays the percentage transmittance on the y-axis and the wavenumbers (cm⁻¹) on the x-axis ranging from 4000 to 500 cm⁻¹. ### Key Features and Annotations: 1. **Broad Peak at ~3488.54 cm⁻¹:** - Labeled as "O-H" with "water" written next to it, indicating an O-H stretching vibration commonly associated with water or alcohols. 2. **Multiple Sharp Peaks between 2972.73 cm⁻¹ and 2922.38 cm⁻¹:** - These are labeled as "C-H" stretches, typically indicating the presence of alkanes or similar hydrocarbons. 3. **Weak Peak at ~2854.79 cm⁻¹:** - Also marked as a "C-H" stretch, likely relating to symmetric C-H stretching in alkyl groups. 4. **Peak at 1717.07 cm⁻¹:** - Labeled as "C=O," denoting the carbonyl group which includes aldehydes, ketones, carboxylic acids, or esters. 5. **Peak at 1600.90 cm⁻¹, 1517.98 cm⁻¹, and 1453.99 cm⁻¹:** - These peaks are indicative of C=C stretches or aromatic ring stretches. 6. **Peak at 1377.20 cm⁻¹:** - Marked as "C-O," often seen in alcohols, carboxylic acids, esters, and ethers. 7. **Multiple Peaks from 1247.87 cm⁻¹ to 617.12 cm⁻¹:** - These represent various stretching and bending vibrations, but specific functional group information isn't labeled. ### Discussion: The graph provides valuable insights into the molecular structure of the sample through identifying functional groups present. Each peak correlates to a specific bond or group vibration, and their exact positions (in cm⁻¹) help determine the components of the sample. The presence of peaks related to O-H, C-H, C=O, and C=C bonds suggests a complex organic compound possibly containing hydroxyl, carbonyl, and aromatic groups.
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