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A molecule with the molecular formula of C3H8O produces the IR spectrum shown below. Draw a structure that best fits this data. M 4000 3000 2000 1500 Wavenumbers (cm) 1000 500 of

A molecule with the molecular formula of C3H8O produces the IR spectrum shown below. Draw a structure that best fits this data. M 4000 3000 2000 1500 Wavenumbers (cm) 1000 500 of

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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**Title: Analysis of IR Spectrum for C₃H₆O** **Description:** The task is to draw the molecular structure of a compound with the molecular formula C₃H₆O using its IR (infrared) spectrum. **Spectral Analysis:** - **X-Axis (Wavenumbers cm⁻¹):** The spectrum ranges from 4000 cm⁻¹ to 500 cm⁻¹. - **Y-Axis:** Represents the transmittance or absorbance, though specific units are typically not labeled in such diagrams. **Key Peaks:** 1. **Around 1700 cm⁻¹:** This sharp peak is indicative of a carbonyl group (C=O), which is common in ketones, aldehydes, and carboxylic acids. 2. **Between 2800 cm⁻¹ and 3000 cm⁻¹:** Multiple peaks in this region suggest the presence of C-H stretches, typically found in alkanes. 3. **Around 1200 cm⁻¹ and 1100 cm⁻¹:** These may suggest C-O bond stretches, often present in alcohols or ethers. **Diagram Features:** - The IR spectrum displays several distinct peaks. The strongest and most notable is around 1700 cm⁻¹, confirming the presence of a carbonyl group. **Instructions for Students:** Based on the IR spectrum provided, deduce and draw a plausible structure for the molecule C₃H₆O. Consider functional groups such as aldehydes, ketones, or esters based on the presence of the carbonyl peak. **Interactive Component:** Students can use the space below the spectrum to sketch their proposed molecular structure that aligns with the IR data. **Note:** The dotted box labeled "Select to Edit" is designed for interactive engagement, allowing students to visualize and verify their structural hypotheses.
Transcribed Image Text:**Title: Analysis of IR Spectrum for C₃H₆O** **Description:** The task is to draw the molecular structure of a compound with the molecular formula C₃H₆O using its IR (infrared) spectrum. **Spectral Analysis:** - **X-Axis (Wavenumbers cm⁻¹):** The spectrum ranges from 4000 cm⁻¹ to 500 cm⁻¹. - **Y-Axis:** Represents the transmittance or absorbance, though specific units are typically not labeled in such diagrams. **Key Peaks:** 1. **Around 1700 cm⁻¹:** This sharp peak is indicative of a carbonyl group (C=O), which is common in ketones, aldehydes, and carboxylic acids. 2. **Between 2800 cm⁻¹ and 3000 cm⁻¹:** Multiple peaks in this region suggest the presence of C-H stretches, typically found in alkanes. 3. **Around 1200 cm⁻¹ and 1100 cm⁻¹:** These may suggest C-O bond stretches, often present in alcohols or ethers. **Diagram Features:** - The IR spectrum displays several distinct peaks. The strongest and most notable is around 1700 cm⁻¹, confirming the presence of a carbonyl group. **Instructions for Students:** Based on the IR spectrum provided, deduce and draw a plausible structure for the molecule C₃H₆O. Consider functional groups such as aldehydes, ketones, or esters based on the presence of the carbonyl peak. **Interactive Component:** Students can use the space below the spectrum to sketch their proposed molecular structure that aligns with the IR data. **Note:** The dotted box labeled "Select to Edit" is designed for interactive engagement, allowing students to visualize and verify their structural hypotheses.
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