1. For the above shown IR-Spectrum (Indicate the structure of the organic molecule). What are the characteristic peaks present?2. Show (or draw) the IR spectrum, the NMR Spectrum, and the Mass spectrum for Methyl Ethyl Ester.3. Show or hand draw the IR spectrum, the NMR Spectrum, and the Mass spectrum for Acetyl Salicylic acid (commonly known as Aspirin). **Infrared Spectrum of Anthracene**The image shows the infrared (IR) spectrum of anthracene, which is analyzed to determine the structural characteristics of the molecule. The spectrum is plotted with relative transmittance on the y-axis (ranging from 0 to 1) and wavenumber on the x-axis (ranging from 4000 to 400 cm⁻¹).**Characteristic Peaks:**1. **3000-3100 cm⁻¹ Range:** This area commonly indicates C-H stretching vibrations typical in aromatic compounds like anthracene.2. **1600-1500 cm⁻¹ Range:** These peaks often correspond to C=C stretching in aromatic rings.3. **800-700 cm⁻¹ Range:** Out-of-plane C-H bending vibrations are often found here, characteristic of aromatic compounds.**Instructions for Students:**1. Analyze the provided IR spectrum of anthracene to identify the structure and characteristic peaks.2. Produce or find the IR, NMR, and mass spectrum for Methyl ethyl ester.3. Create or find the IR, NMR, and mass spectrum for Acetyl Salicylic Acid (Aspirin).4. Write a one-page summary of the first video under Lab 4 (10:27 runtime).5. Write a one-page summary of the second video under Lab 4 (54:17 runtime).For further reference, visit the NIST Chemistry WebBook at [NIST Chemistry WebBook](https://webbook.nist.gov/chemistry).

Answered: 0.8 0.6 0.4 3000 INFRARED SPECTRUM www…

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

1. For the above shown IR-Spectrum (Indicate the structure of the organic molecule). What are the characteristic peaks present?

2. Show (or draw) the IR spectrum, the NMR Spectrum, and the Mass spectrum for Methyl Ethyl Ester.

3. Show or hand draw the IR spectrum, the NMR Spectrum, and the Mass spectrum for Acetyl Salicylic acid (commonly known as Aspirin).

**Infrared Spectrum of Anthracene**

The image shows the infrared (IR) spectrum of anthracene, which is analyzed to determine the structural characteristics of the molecule. The spectrum is plotted with relative transmittance on the y-axis (ranging from 0 to 1) and wavenumber on the x-axis (ranging from 4000 to 400 cm⁻¹).

**Characteristic Peaks:**
1. **3000-3100 cm⁻¹ Range:** This area commonly indicates C-H stretching vibrations typical in aromatic compounds like anthracene.
2. **1600-1500 cm⁻¹ Range:** These peaks often correspond to C=C stretching in aromatic rings.
3. **800-700 cm⁻¹ Range:** Out-of-plane C-H bending vibrations are often found here, characteristic of aromatic compounds.

**Instructions for Students:**
1. Analyze the provided IR spectrum of anthracene to identify the structure and characteristic peaks.
2. Produce or find the IR, NMR, and mass spectrum for Methyl ethyl ester.
3. Create or find the IR, NMR, and mass spectrum for Acetyl Salicylic Acid (Aspirin).
4. Write a one-page summary of the first video under Lab 4 (10:27 runtime).
5. Write a one-page summary of the second video under Lab 4 (54:17 runtime).

For further reference, visit the NIST Chemistry WebBook at [NIST Chemistry WebBook](https://webbook.nist.gov/chemistry).

Expert Solution

Step 1

In the given IR spectrum, the characteristics peak at 3050cm-1, 1620cm-1, 900cm-1 and 720cm-1.

The strong peak at 3050cm-1 is due to sp² C-H stretching. The intensity of this peak is very high.

The peak at 1620cm-1 is weak. This may appear due to presence of C=C group (stretching). The peak is weak due to low bond energy of C=C. Also several bands of weak and medium intensity is found in the range of 1200-2000cm-1.

The peak at 900cm-1 and 720cm-1 is due to sp² C-H vibration. The peak at 900cm-1 is for out of plane C-H vibration and 720cm-1 is for in plane C-H vibration.

No such characteristics peaks are present. Therefore this molecule consist of C=C group and sp² C-H. So, it is an aromatic hydrocarbon.

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