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8. Which of the following compounds will absorb energy in the region UV-Vis of the magnetic...
could someone answer these 3 review questions?
1. Which of the following compounds will absorb energy in the region UV-Vis of the magnetic spectrum? B - 에 C >OH B. NO D c E none of the above 3. What will be the product of the following transformation? D. CHala Zn (Cu) ? E None the above A 2. What will be the product of the following reaction sequence? B NaNH2 H.O.H с D. E. None of the above
I need help with all 3 problems. thank you!
6. For the compound below give the integration ratio that would be observed for each of the protons sets in the 'H NMR spectrum H Ha A) Ham4, Hb=2 B) Ha=2, Hb=2 C) Ha=2, Hba1 D) Ha=1, Hb1 E) None of the above. 7. Which of the following nuclei are capable of magnetic resonance? A) 10 B) 12c C) "P D) 14C E) none of the above 8. Which of the...
Which of the following compounds would show the Imax of longest wavelength in its UV-Vis spectrum?
Which of these compounds exhibits the longest wavelength Imax in the UV-vis spectrum? O A. OB. OC. What is the major product of this reaction? 1 equiv. HBr -80°C Br لد A. Br B. OC. Br Br OD. Rank these conformations from least to most stable (less stable < more stable). H Cl CI CH3 H CH3 Н H CH3 CH CI H CH 3 H CH 3 3 H H H - 11 A. II < III < B....
which of the following absorb in the UV region? (a)N,, (b)02 (c)。(d)CO, (e) CH (OG (h) Cl2, (i) cyclohexane, and (j) C,H 5.10
5. In the UV-visible spectrum of (E)-1,3 ,5-hexatriene, the lowest energy absorption corresponds to ______________. A) a pi to pi^* transition B) a pi to pi^8 transition C) a pi to sigma^* transition D) a sigma to sigma^* transition E) a sigma to pi transition F) none of these, UV-vis causes changes in stretching not electronic transitions G) none of these, UV-vis forms ions through loss of electrons
S Cinle ALL of the following which would ahsorb in the UV region Now indicate which ONE would absorb at the longest wavelength 6. Consider this graph: a) Which is the kinetic product, B or C? b) Is the reaction endothermic or exothermic? 7, a) Draw the structure of the product of this reaction. /2 b) Write out all the steps in the mechanism of this reaction. Include all resonance structures benzene C½ FeCl Clz
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. Infrared (IR) light is in the gamma ray part of the electromagnetic spectrum. Electromagnetic radiation is characterized by its mass and force. UV-Vis spectra are normally scanned in the 4000-600 cm-1 region. The fingerprint region on an IR spectrum is the easiest to interpret. Stronger...
1 9. Arrange the following in ng compounds in increasing (weakest to strongest) order of basicity. NH2 NH2 NO2 E. None of the above What is the product of the following sequence? 10. H3C CH3 OH он Na V. A I What is the major product for the following Reaction? 11. Pd(OAc)h PPhy Et N NO2 NO2 NO2 C.Ⅲ A. I D. IV V. 12. Predict the product for the following reaction. Br 1. NaNs 2. LiAIH4 3. H20
1...
Please answer Questions 8,9,
& 10 and explain why please. Thanks!
8. Which compound is the reactant for this reaction? OH ? 1. NaOH (excess), 70°C 2. H30* NO2 H NO2 NO2 B. NO2 NO2 D Br NO2 E. A. C. 9. Which statement best describes the aromaticity and UV-vis spectra of these two substances? II A. Both are aromatic. The longest wavelength of absorbance of I is larger than that of II. B. Both are aromatic. The longest wavelength...