📝 Quiz Pages
- Spectroscopy is the study of the interaction between matter and electromagnetic radiation, used to identify and analyze molecular structure.
- Infrared radiation causes molecular vibrations, providing information about functional groups and bond types in molecules.
- IR spectroscopy uses infrared light to identify functional groups based on their characteristic vibrational frequencies.
- The fingerprint region is the area below 1500 cm⁻¹ in IR spectra that provides a unique pattern for each compound.
- Visible absorption occurs when molecules absorb light in the visible spectrum, often due to conjugated systems or colored compounds.
- UV absorption involves electronic transitions, particularly π→π* and n→π* transitions in molecules with double bonds or lone pairs.
- Conjugation refers to extended systems of alternating single and double bonds that lower energy gaps and shift UV absorption to longer wavelengths.
- NMR spectroscopy uses nuclear magnetic resonance to determine molecular structure by analyzing the magnetic environment of nuclei.
- Chemical shift is the position of an NMR peak relative to a reference standard, indicating the magnetic environment of the nucleus.
- Spin-spin splitting causes NMR peaks to split into multiple lines due to magnetic interactions with neighboring nuclei.
- Integration in NMR measures the area under peaks, which is proportional to the number of nuclei in that environment.