**Example Problem: Analysis of NMR Spectrum****Chemical Data:**- **Chemical Formula:** C₅H₁₀O₂- **IR Spectrum:** Strong peak at 1750 cm⁻¹**NMR Spectrum Analysis:**The NMR spectrum presented shows three distinct signals with the following characteristics:1. **Signal at ~5.0 ppm:** - Integration: 1H - This peak may correspond to a hydrogen atom in a deshielded environment, possibly near an electronegative atom or group.2. **Signal at ~2.0 ppm:** - Integration: 3H - This peak suggests a methyl group (CH₃) possibly adjacent to a carbonyl or other electron-withdrawing group.3. **Signal at ~1.0 ppm:** - Integration: 6H - This peak likely represents two equivalent methyl groups, possibly in an alkyl chain or equivalent environment.**Note:**The strong IR peak at 1750 cm⁻¹ indicates the presence of a carbonyl group, likely an ester or ketone, which influences the chemical environment of the hydrogen atoms in the molecule.**Calculation Check:**- The handwritten note "5×2 = 10 - 10 = 0" suggests a verification of the number of hydrogens in the chemical formula, confirming the spectrum accounts for all hydrogen atoms present.This analysis can assist in identifying the structure of the compound C₅H₁₀O₂ by combining the NMR and IR data.

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6 IR: strong peak at 1750cm-1 1H 3+2= 3 PPM 3H 6H

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

**Example Problem: Analysis of NMR Spectrum**

**Chemical Data:**
- **Chemical Formula:** C₅H₁₀O₂
- **IR Spectrum:** Strong peak at 1750 cm⁻¹

**NMR Spectrum Analysis:**

The NMR spectrum presented shows three distinct signals with the following characteristics:

1. **Signal at ~5.0 ppm:**
- Integration: 1H
- This peak may correspond to a hydrogen atom in a deshielded environment, possibly near an electronegative atom or group.

2. **Signal at ~2.0 ppm:**
- Integration: 3H
- This peak suggests a methyl group (CH₃) possibly adjacent to a carbonyl or other electron-withdrawing group.

3. **Signal at ~1.0 ppm:**
- Integration: 6H
- This peak likely represents two equivalent methyl groups, possibly in an alkyl chain or equivalent environment.

**Note:**
The strong IR peak at 1750 cm⁻¹ indicates the presence of a carbonyl group, likely an ester or ketone, which influences the chemical environment of the hydrogen atoms in the molecule.

**Calculation Check:**
- The handwritten note "5×2 = 10 - 10 = 0" suggests a verification of the number of hydrogens in the chemical formula, confirming the spectrum accounts for all hydrogen atoms present.

This analysis can assist in identifying the structure of the compound C₅H₁₀O₂ by combining the NMR and IR data.

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