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Significant the IR peaks observed in each fraction? First image fraction #1 Second image fraction #2

Significant the IR peaks observed in each fraction? First image fraction #1 Second image fraction #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
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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Significant the IR peaks observed in each fraction? First image fraction #1 Second image fraction #2
### Infrared Spectroscopy Analysis **Transmittance Spectrum** - **Title:** Fraction #2 - **Instrument:** Bruker IR Spectrometer **Graph Description:** - **X-axis (Wavenumber in cm⁻¹):** The spectrum ranges from approximately 600 cm⁻¹ to 3500 cm⁻¹. Key wavenumber markers include: - 3324.67 cm⁻¹ - 2958.41 cm⁻¹ - 2932.38 cm⁻¹ - 2873.18 cm⁻¹ - 1464.36 cm⁻¹ - 1071.13 cm⁻¹ - 1028.81 cm⁻¹ - 951.73 cm⁻¹ - 846.43 cm⁻¹ - 633.79 cm⁻¹ - **Y-axis (Transmittance %):** The transmittance scale ranges from 65% to 100%, indicating the percentage of light that passes through the sample without being absorbed. **Key Features:** - The spectrum exhibits several distinct peaks at the specified wavenumbers. These peaks correspond to various vibrational modes of the molecules within the sample. - The prominent broad peak around 3324.67 cm⁻¹ typically indicates the presence of O-H or N-H stretching vibrations, common in alcohols or amines. - Peaks in the 2900 cm⁻¹ region often suggest C-H stretching vibrations, indicating the presence of alkanes. - The peak at 1464.36 cm⁻¹ is generally associated with bending vibrations, which can be indicative of CH₂ or CH₃ groups. - Other lower frequency peaks suggest possible fingerprint regions specific to particular molecular structures. This spectrum can help identify functional groups in the sample, offering insight into its chemical composition.
Transcribed Image Text:### Infrared Spectroscopy Analysis **Transmittance Spectrum** - **Title:** Fraction #2 - **Instrument:** Bruker IR Spectrometer **Graph Description:** - **X-axis (Wavenumber in cm⁻¹):** The spectrum ranges from approximately 600 cm⁻¹ to 3500 cm⁻¹. Key wavenumber markers include: - 3324.67 cm⁻¹ - 2958.41 cm⁻¹ - 2932.38 cm⁻¹ - 2873.18 cm⁻¹ - 1464.36 cm⁻¹ - 1071.13 cm⁻¹ - 1028.81 cm⁻¹ - 951.73 cm⁻¹ - 846.43 cm⁻¹ - 633.79 cm⁻¹ - **Y-axis (Transmittance %):** The transmittance scale ranges from 65% to 100%, indicating the percentage of light that passes through the sample without being absorbed. **Key Features:** - The spectrum exhibits several distinct peaks at the specified wavenumbers. These peaks correspond to various vibrational modes of the molecules within the sample. - The prominent broad peak around 3324.67 cm⁻¹ typically indicates the presence of O-H or N-H stretching vibrations, common in alcohols or amines. - Peaks in the 2900 cm⁻¹ region often suggest C-H stretching vibrations, indicating the presence of alkanes. - The peak at 1464.36 cm⁻¹ is generally associated with bending vibrations, which can be indicative of CH₂ or CH₃ groups. - Other lower frequency peaks suggest possible fingerprint regions specific to particular molecular structures. This spectrum can help identify functional groups in the sample, offering insight into its chemical composition.
**Infrared Spectroscopy Analysis** **Description:** The image represents an infrared (IR) spectroscopy graph, created using a Bruker spectrometer. The x-axis is labeled "Wavenumber (cm⁻¹)" with values ranging from 500 to 3500 cm⁻¹, while the y-axis is labeled "Transmittance (%)" with values from 60% to 100%. **Key Features:** - **Wavenumber Peaks:** - 3393.09 cm⁻¹ - 2971.99 cm⁻¹ - 1364.81 cm⁻¹ - 1201.36 cm⁻¹ - 1073.80 cm⁻¹ - 848.72 cm⁻¹ - 723.92 cm⁻¹ These peaks indicate the absorption of specific frequencies, characteristic of different molecular vibrations. **Interpretation:** - The peak around 3393 cm⁻¹ typically indicates O-H or N-H stretching vibrations. - The peak near 2971 cm⁻¹ is often associated with C-H stretching. - Peaks in the range of 1364.81 to 723.92 cm⁻¹ may indicate various bending and stretching modes related to specific functional groups in the sample. Overall, this graph helps in identifying molecular structures and functional groups present in the analyzed sample.
Transcribed Image Text:**Infrared Spectroscopy Analysis** **Description:** The image represents an infrared (IR) spectroscopy graph, created using a Bruker spectrometer. The x-axis is labeled "Wavenumber (cm⁻¹)" with values ranging from 500 to 3500 cm⁻¹, while the y-axis is labeled "Transmittance (%)" with values from 60% to 100%. **Key Features:** - **Wavenumber Peaks:** - 3393.09 cm⁻¹ - 2971.99 cm⁻¹ - 1364.81 cm⁻¹ - 1201.36 cm⁻¹ - 1073.80 cm⁻¹ - 848.72 cm⁻¹ - 723.92 cm⁻¹ These peaks indicate the absorption of specific frequencies, characteristic of different molecular vibrations. **Interpretation:** - The peak around 3393 cm⁻¹ typically indicates O-H or N-H stretching vibrations. - The peak near 2971 cm⁻¹ is often associated with C-H stretching. - Peaks in the range of 1364.81 to 723.92 cm⁻¹ may indicate various bending and stretching modes related to specific functional groups in the sample. Overall, this graph helps in identifying molecular structures and functional groups present in the analyzed sample.
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