I) What is the principle of IR Spectroscopy? 2) How many types of bending vibrations are there? The number of species? 3) Why is KBr used in IR spectroscopy? 4) Why is water not used in IR spectroscopy? 5) Does Infrared have color?
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This technique involves analyzing the frequencies of light absorbed by the sample, which provides information about the molecular structure. Show more…
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2. Why are the 'peaks' upside-down in an IR transmittance spectrum? A. IR spectrometers are conventionally used upside-down. B. The x-axis is in reciprocal units. C. Transmittance decreases when the sample absorbs more light. D. IR radiation has longer wavelengths than visible light. 3. Which of the following does NOT affect which IR frequencies a bond can absorb? A. Bond properties, such as length and strength. B. The vibrational modes available to the bond. C. Relative location of the bond to the IR source. D. The atoms connected by the bond. 4. What could a wide peak near 3300 cm-1 indicate? A. C-O stretching B. O-H or N-H stretching C. C=C stretching D. C=O stretching
Sri K.
Assume that you are carrying out the dehydration of 1-methylcyclohexanol to yield 1-methylcyclohexene. How could you use infrared spectroscopy to determine when the reaction is complete?
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