Indicate which of the following statements about the electromagnetic spectrum and IR spectroscopy are true and which are false. In any cases where the statement is false, explain how or why the statement is false.
a. FALSE- Infrared has frequency in the region of Hz where frequency of Gamma ray appear at Hz.
b. FALSE- Electromagnetic radiation is a wave in nature,so it is charaterized by wavelike properties such as frequency,wavelength etc.
c. FALSE- UV spectra has wavenumber between 25000-50000 cm-1 and visible light has spans from 12000-25000 cm-1.
d. TRUE- The Fingerprint region in IR contains the functional groups with unique charateristics,so they are quite easy to interpret.
e. TRUE - Stronger bonds are more stiff and require much more force to vibrate than weaker bonds .So the Stronger bonds have much more frequency than weak bonds.As frequency is directly proportional to the wavenumber,so stronger the bond,higher the wavenumber.
f. TRUE- Aspirin contains two peaks ,1754cm-1 for the Carbonyl of Ester part and 1693cm-1 for the carbonyl of Acid .
g.TRUE- Studying IR spectra one can get information about functional groups if one notice which absorptions are present.
h. FALSE- reduced mass is same for both the bonds as atoms are same. bond is stronger than so the former has higher energy than the latter.
i. TRUE
j. FALSE
Indicate which of the following statements about the electromagnetic spectrum and IR spectroscopy are true and...
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D. IUU LIII 2. Which of the following statements is (are) true about the IR spectrum of the compound drawn below? A. It shows absorptions at 3000-3150 cm and 1720 cm B. It shows absorptions at 3000-2850 cm and 2150 cm C. It shows absorptions at 2250 cm and 1650 cm . D. Both statements B (It shows absorptions at 3000-2850 cm and and D (It shows absorptions at 2250 cm and 1720 cm') are true. 2250 cm
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