### Matching Functional Groups with IR Frequencies**Objective:** Match the following functional groups with their associated infrared (IR) frequencies. *Note: All measurements below are approximate wavenumbers given in cm-1.*1. **Alkene (C-H)** - Possible IR frequency: 1700 cm-12. **Alkane (C-H)** - Possible IR frequency: 3050 cm-13. **Carbonyl (C=O)** - Possible IR frequency: 2900 cm-14. **Alcohol (O-H)** - Possible IR frequency: 3400 cm-1### ExplanationInfrared spectroscopy is a technique commonly used in chemistry to identify functional groups within molecules. Each functional group absorbs infrared light at certain frequencies, which can be measured as wavenumbers (cm-1).In the context above, select the appropriate IR frequency for each functional group based on typical absorption ranges.

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Answered: wavenumbers in cm-¹) Alkene (C-H)…

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wavenumbers in cm-¹) Alkene (C-H) Alkane (C-H) Carbonyl (C=O) Alcohol (O-H) = 1700 cm^-✪ 3050 cm^- 2900 cm^- 3400 cm^-

Organic Chemistry: A Guided Inquiry

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ChapterL4: Proton (1h) Nmr Spectroscopy

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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

### Matching Functional Groups with IR Frequencies

**Objective:** Match the following functional groups with their associated infrared (IR) frequencies.

*Note: All measurements below are approximate wavenumbers given in cm<sup>-1</sup>.*

1. **Alkene (C-H)**
- Possible IR frequency: 1700 cm<sup>-1</sup>

2. **Alkane (C-H)**
- Possible IR frequency: 3050 cm<sup>-1</sup>

3. **Carbonyl (C=O)**
- Possible IR frequency: 2900 cm<sup>-1</sup>

4. **Alcohol (O-H)**
- Possible IR frequency: 3400 cm<sup>-1</sup>

### Explanation

Infrared spectroscopy is a technique commonly used in chemistry to identify functional groups within molecules. Each functional group absorbs infrared light at certain frequencies, which can be measured as wavenumbers (cm<sup>-1</sup>).

In the context above, select the appropriate IR frequency for each functional group based on typical absorption ranges.

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