The image displays a section of a spectroscopy problem set focused on chemical analysis.**Item 8:**- **Chemical Formula:** C₈H₁₂O₄- **Infrared (IR) Spectroscopy Information:** - Strong peak at 1720 cm⁻¹ - Peak at 1650 cm⁻¹**NMR Spectrum Description:**- **2H peak** around 6.5 PPM- **4H peak** around 4 PPM- **6H peak** around 1 PPM- Additional handwritten notes indicate calculations or observations related to the spectrum (e.g., splitting patterns).**Item 9:**- **Chemical Formula:** C₅H₁₀O₂- **IR Spectroscopy Information:** - Strong peak at 1750 cm⁻¹**Additional Calculation:**- Handwritten next to Item 9: "5 × 2 = 10 - 10 = 0", potentially indicating a calculation for determining degrees of unsaturation or another structural feature. This information can help determine the molecular structure by analyzing NMR and IR spectra, which together provide insights about hydrogen environments and functional groups in the compounds.

1H-nmr provides the information of hydrogen environment of unknown compound.

Answered: 8) Chemical Formula: C8H1204 IR: strong…

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8) Chemical Formula: C8H1204 IR: strong peak 1720cm-1, peak at 1650cm-1 2H 6 一 PPM 4H PPM 8x2=16+2=18-c=6/2= 2 土土。 6H O

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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Concept explainers

NMR Spectroscopy

NMR stands for Nuclear Magnetic Resonance in which the study of different molecules is done based on the interaction of radiofrequency electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field. A precise study of spectra of visible light and all bands of electromagnetic radiation is called spectroscopy.

Question

100%

The image displays a section of a spectroscopy problem set focused on chemical analysis.

**Item 8:**
- **Chemical Formula:** C₈H₁₂O₄
- **Infrared (IR) Spectroscopy Information:**
- Strong peak at 1720 cm⁻¹
- Peak at 1650 cm⁻¹

**NMR Spectrum Description:**
- **2H peak** around 6.5 PPM
- **4H peak** around 4 PPM
- **6H peak** around 1 PPM
- Additional handwritten notes indicate calculations or observations related to the spectrum (e.g., splitting patterns).

**Item 9:**
- **Chemical Formula:** C₅H₁₀O₂
- **IR Spectroscopy Information:**
- Strong peak at 1750 cm⁻¹

**Additional Calculation:**
- Handwritten next to Item 9: "5 × 2 = 10 - 10 = 0", potentially indicating a calculation for determining degrees of unsaturation or another structural feature.

This information can help determine the molecular structure by analyzing NMR and IR spectra, which together provide insights about hydrogen environments and functional groups in the compounds.

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