alyze the following IR spectra and match each spectrum to the correct molecule using the list of molec one structure for each molecule; not all molecules will be used). Draw the correct molecule in the bo ght. Label the relevant peaks in the spectra with the proper functional group. If the absence of ke led to your choice, indicate which key peaks were absent. NH₂ OH OH OH HN

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Chapter1: Chemical Foundations
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**Instructions for IR Spectra Analysis**

Analyze the following IR spectra and match each spectrum to the correct molecule using the list of molecules provided. Note that only one structure is required for each molecule, and not all molecules will be used. 

**Tasks:**

1. **Draw the Correct Molecule**: In the box to the right of each spectrum, draw the correct molecular structure that corresponds to the given IR spectrum.

2. **Label Relevant Peaks**: Indicate the relevant peaks in the spectra, linking them to the correct functional group present in the molecule.

3. **Key Peak Absence**: If the absence of key peaks led to your choice of molecule, specify which key peaks were missing.

**List of Molecules:**

1. Isopropylamine: \[ \text{(CH\textsubscript{3})\textsubscript{2}CHNH\textsubscript{2}} \]
2. 1-Hexyne: \[ \text{CH\textsubscript{3}C{\equiv}CCH\textsubscript{2}CH\textsubscript{2}CH\textsubscript{3}} \]
3. Propen-2-ol: \[ \text{CH\textsubscript{3}C(OH){=}CH\textsubscript{2}} \]
4. Propanol: \[ \text{CH\textsubscript{3}CH\textsubscript{2}CH\textsubscript{2}OH} \]
5. Propanoic Acid: \[ \text{CH\textsubscript{3}CH\textsubscript{2}COOH} \]
6. Piperidine: \[ \text{C\textsubscript{5}H\textsubscript{11}NH} \]
7. Isobutane: \[ \text{(CH\textsubscript{3})\textsubscript{3}CH} \]
8. Ethyl Acetate: \[ \text{CH\textsubscript{3}COOCH\textsubscript{2}CH\textsubscript{3}} \]
9. 1-Butyne: \[ \text{CH\textsubscript{3}C{\equiv}CCH\textsubscript{3}} \]
10. 1-Heptene: \[
Transcribed Image Text:**Instructions for IR Spectra Analysis** Analyze the following IR spectra and match each spectrum to the correct molecule using the list of molecules provided. Note that only one structure is required for each molecule, and not all molecules will be used. **Tasks:** 1. **Draw the Correct Molecule**: In the box to the right of each spectrum, draw the correct molecular structure that corresponds to the given IR spectrum. 2. **Label Relevant Peaks**: Indicate the relevant peaks in the spectra, linking them to the correct functional group present in the molecule. 3. **Key Peak Absence**: If the absence of key peaks led to your choice of molecule, specify which key peaks were missing. **List of Molecules:** 1. Isopropylamine: \[ \text{(CH\textsubscript{3})\textsubscript{2}CHNH\textsubscript{2}} \] 2. 1-Hexyne: \[ \text{CH\textsubscript{3}C{\equiv}CCH\textsubscript{2}CH\textsubscript{2}CH\textsubscript{3}} \] 3. Propen-2-ol: \[ \text{CH\textsubscript{3}C(OH){=}CH\textsubscript{2}} \] 4. Propanol: \[ \text{CH\textsubscript{3}CH\textsubscript{2}CH\textsubscript{2}OH} \] 5. Propanoic Acid: \[ \text{CH\textsubscript{3}CH\textsubscript{2}COOH} \] 6. Piperidine: \[ \text{C\textsubscript{5}H\textsubscript{11}NH} \] 7. Isobutane: \[ \text{(CH\textsubscript{3})\textsubscript{3}CH} \] 8. Ethyl Acetate: \[ \text{CH\textsubscript{3}COOCH\textsubscript{2}CH\textsubscript{3}} \] 9. 1-Butyne: \[ \text{CH\textsubscript{3}C{\equiv}CCH\textsubscript{3}} \] 10. 1-Heptene: \[
### Infrared Spectroscopy Analysis

In this section, we analyze three infrared (IR) spectroscopy graphs, each representing the transmittance (%) across a spectrum of wavenumbers (cm⁻¹).

#### Graph Descriptions

1. **First Graph:**
   - **X-Axis:** Wavenumber (cm⁻¹) ranging from 4000 to 400.
   - **Y-Axis:** Transmittance (%) from 0 to 100.
   - **Features:** The spectrum displays multiple peaks and troughs, indicating various absorption bands. Notable absorption appears around 3400 cm⁻¹, 1650 cm⁻¹, 1000 cm⁻¹, and below 500 cm⁻¹, typical of characteristic molecular vibrations.

2. **Second Graph:**
   - **X-Axis:** Wavenumber (cm⁻¹) from 4000 to 400.
   - **Y-Axis:** Transmittance (%) ranging from 0 to 100.
   - **Features:** Similar to the first graph, this spectrum has distinct peaks, with significant absorption detected around 3000 cm⁻¹, 2200 cm⁻¹, and 500 cm⁻¹, each corresponding to specific functional groups or bonds.

3. **Third Graph:**
   - **X-Axis:** Wavenumber (cm⁻¹) extending from 4000 to 400.
   - **Y-Axis:** Transmittance (%) spans from 0 to 100.
   - **Features:** The third spectrum shows prominent absorption bands near 3300 cm⁻¹, 1600 cm⁻¹, 1200 cm⁻¹, and strong absorption below 700 cm⁻¹, indicating different molecular structures or material compositions.

### Understanding IR Spectroscopy

IR spectroscopy is a powerful analytical tool used to identify and study chemicals. The spectra provide insight into the molecular vibrations associated with different bonds, helping in identifying the chemical composition and functional groups in the sample.

#### Key Points:
- **Wavenumber Range:** The range from 4000 to 400 cm⁻¹ captures most functional group absorptions.
- **Transmittance Peaks:** Peaks correspond to specific molecular bonds or functional groups absorbing IR radiation, causing molecular vibrations.
- **Applications:** Useful in organic and inorganic chemistry, biochemistry, and materials science for elucidating molecular structures and interactions.

Understanding these graphs
Transcribed Image Text:### Infrared Spectroscopy Analysis In this section, we analyze three infrared (IR) spectroscopy graphs, each representing the transmittance (%) across a spectrum of wavenumbers (cm⁻¹). #### Graph Descriptions 1. **First Graph:** - **X-Axis:** Wavenumber (cm⁻¹) ranging from 4000 to 400. - **Y-Axis:** Transmittance (%) from 0 to 100. - **Features:** The spectrum displays multiple peaks and troughs, indicating various absorption bands. Notable absorption appears around 3400 cm⁻¹, 1650 cm⁻¹, 1000 cm⁻¹, and below 500 cm⁻¹, typical of characteristic molecular vibrations. 2. **Second Graph:** - **X-Axis:** Wavenumber (cm⁻¹) from 4000 to 400. - **Y-Axis:** Transmittance (%) ranging from 0 to 100. - **Features:** Similar to the first graph, this spectrum has distinct peaks, with significant absorption detected around 3000 cm⁻¹, 2200 cm⁻¹, and 500 cm⁻¹, each corresponding to specific functional groups or bonds. 3. **Third Graph:** - **X-Axis:** Wavenumber (cm⁻¹) extending from 4000 to 400. - **Y-Axis:** Transmittance (%) spans from 0 to 100. - **Features:** The third spectrum shows prominent absorption bands near 3300 cm⁻¹, 1600 cm⁻¹, 1200 cm⁻¹, and strong absorption below 700 cm⁻¹, indicating different molecular structures or material compositions. ### Understanding IR Spectroscopy IR spectroscopy is a powerful analytical tool used to identify and study chemicals. The spectra provide insight into the molecular vibrations associated with different bonds, helping in identifying the chemical composition and functional groups in the sample. #### Key Points: - **Wavenumber Range:** The range from 4000 to 400 cm⁻¹ captures most functional group absorptions. - **Transmittance Peaks:** Peaks correspond to specific molecular bonds or functional groups absorbing IR radiation, causing molecular vibrations. - **Applications:** Useful in organic and inorganic chemistry, biochemistry, and materials science for elucidating molecular structures and interactions. Understanding these graphs
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