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- Provide a description of the general characteristics of rotational spectroscopy.Explain the concept of Fourier Transform IR spectroscopy ?In comparing fluorescence spectroscopy to UV-Vis absorption spectroscopy, which of the statements is true? Fluorescence measurements are more precise and less noisy because only the intensity of the emitted light is measured. Fluorescence measurements do not suffer deviations from linearity like absorbance measurements do. Fluorescence measurements have better detection limits because at low concentrations a low intensity emission signal is being measured against a low intensity background signal. O Fluorescence instruments are less expensive than absorption measurements.
- Explain Vibrational spectra of vibrating diatomic moleculesWhat factors influence the wavelength of maximum emission and maximum excitation in fluorescence spectroscopy?Describe vibrational spectroscopy. Vibrational spectra of molecules. Harmonic oscillator model: energy levels, selection rules and transitions. Absorption spectra and Raman spectra.
- Why is fluorescence generally more sensitive than absorption measurements?Cyclohexene and 2 hexyne both have the molecular formula C6H10. How would you use infrared spectroscopy to distinguish between these two compounds?Match the region of the electromanetic spectrum with the type of chemical spectroscopy. Nuclear magnetic resonance (NMR) - electron and proton resonance Options: X-rays Microwaves Infared Radio waves Ultraviolet and visible light Raman spectroscopy-molecular rotations options: X-rays Microwaves Infared Radio waves Ultraviolet and visible light Electron excitation (energy level changes) Options: X-rays Microwaves Infared Radio waves Ultraviolet and visible light IR spectroscopy - molecular vibrations Options: X-rays Microwaves Infared Radio waves Ultraviolet and visible light Ionization Options: X-rays Microwaves Infared Radio waves Ultraviolet and visible light
