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-8 7) Chemical Formula: C₂H₁N IR: weak peak at 3400cm-1 1H SH -CO 6 Unknowns for 1H NMR Final Report (8+27= 16-42 = 4/2=2. PPM 2H 3H H --1 H h+1=2 لے لی ۔ ہر -H = 16-12= 4/2=2

-8 7) Chemical Formula: C₂H₁N IR: weak peak at 3400cm-1 1H SH -CO 6 Unknowns for 1H NMR Final Report (8+27= 16-42 = 4/2=2. PPM 2H 3H H --1 H h+1=2 لے لی ۔ ہر -H = 16-12= 4/2=2

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
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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**1H NMR Final Report Analysis** --- **Sample 1:** **Chemical Formula:** C<sub>8</sub>H<sub>11</sub>N **IR Spectrum:** Weak peak at 3400 cm<sup>-1</sup> **NMR Spectrum Description:** - **Peak at ~7.3 ppm (5H):** Indicates the presence of aromatic protons. - **Peak at ~2.4 ppm (2H):** Suggests a possible methylene group adjacent to an electron-withdrawing group. - **Peak at ~1.2 ppm (3H):** Suggests a methyl group. **Structural Notes:** Possible presence of a benzene ring and aliphatic chain. --- **Sample 2:** **Chemical Formula:** C<sub>8</sub>H<sub>12</sub>O<sub>4</sub> **IR Spectrum:** Strong peaks at 1720 cm<sup>-1</sup> and 1650 cm<sup>-1</sup> **NMR Spectrum Description:** - **Peak at ~7.0 ppm (2H):** Potentially indicates aromatic protons. - **Peak at ~3.6 ppm (4H):** Likely due to two methylene groups near a carbonyl. - **Peak at ~1.2 ppm (6H):** Likely represents methyl groups. **Structural Notes:** Presence of ester or ketone groups. --- **Sample 3:** **Chemical Formula:** C<sub>5</sub>H<sub>10</sub>O<sub>2</sub> **IR Spectrum:** Strong peak at 1750 cm<sup>-1</sup> **NMR Spectrum Description:** - **Peak at ~3.7 ppm (1H):** Suggests an isolated proton possibly adjacent to an electronegative atom or group. - **Peak at ~2.4 ppm (3H):** Indicates a methyl group. - **Peak at ~1.2 ppm (6H):** Represents two methyl groups likely coupled or in proximity. **Structural Notes:** Compatible with aldehyde or ketone functional groups. --- **Graphical Explanation:** Each NMR graph shows the chemical shifts in parts per million (ppm) on the x-axis, with intensity on the y-axis. Peaks indicate different proton environments corresponding to the described chemical structures.
Transcribed Image Text:**1H NMR Final Report Analysis** --- **Sample 1:** **Chemical Formula:** C<sub>8</sub>H<sub>11</sub>N **IR Spectrum:** Weak peak at 3400 cm<sup>-1</sup> **NMR Spectrum Description:** - **Peak at ~7.3 ppm (5H):** Indicates the presence of aromatic protons. - **Peak at ~2.4 ppm (2H):** Suggests a possible methylene group adjacent to an electron-withdrawing group. - **Peak at ~1.2 ppm (3H):** Suggests a methyl group. **Structural Notes:** Possible presence of a benzene ring and aliphatic chain. --- **Sample 2:** **Chemical Formula:** C<sub>8</sub>H<sub>12</sub>O<sub>4</sub> **IR Spectrum:** Strong peaks at 1720 cm<sup>-1</sup> and 1650 cm<sup>-1</sup> **NMR Spectrum Description:** - **Peak at ~7.0 ppm (2H):** Potentially indicates aromatic protons. - **Peak at ~3.6 ppm (4H):** Likely due to two methylene groups near a carbonyl. - **Peak at ~1.2 ppm (6H):** Likely represents methyl groups. **Structural Notes:** Presence of ester or ketone groups. --- **Sample 3:** **Chemical Formula:** C<sub>5</sub>H<sub>10</sub>O<sub>2</sub> **IR Spectrum:** Strong peak at 1750 cm<sup>-1</sup> **NMR Spectrum Description:** - **Peak at ~3.7 ppm (1H):** Suggests an isolated proton possibly adjacent to an electronegative atom or group. - **Peak at ~2.4 ppm (3H):** Indicates a methyl group. - **Peak at ~1.2 ppm (6H):** Represents two methyl groups likely coupled or in proximity. **Structural Notes:** Compatible with aldehyde or ketone functional groups. --- **Graphical Explanation:** Each NMR graph shows the chemical shifts in parts per million (ppm) on the x-axis, with intensity on the y-axis. Peaks indicate different proton environments corresponding to the described chemical structures.
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