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11 Nov 2019
1. In which region would you look for C-H stretching modes? a. 2300-2200cm c. 3300-2700cm1 b. 1700-1600cm d. 1800-1600cm 2. Which type of radiation is used in nuclear magnetic resonance spectroscopy? b. ultraviolet light a. infra-red light visible light c. radio waves d. 3. Which area of the IR spectrum is called the "finger print region"? a. 4000-2800cm c. 2000-1400cm b. 2800-2000cm d. 1400-600cm 4. Which one of the following alkenes does not show any IR band for the symmetric C-C (triple) bond stretch? a. 1-pentyne b. 2-pentyne c. 1-butyne d. 2-butyne 5. What is the mass of the "molecular ion (parent ion)" M generated from methylcyclohexane? a. b. 96 c. 98 d. 100 6. Consider the structure isomers, 1-bromopropane (A) and 2-bromo- propane (B), respectively. How many unique proton peaks are in its 'H NMR? b. A: 3 types, B: 2 types a. A: 4 types, B: 4 types c. A: 2 types, B: 3 types . A: 8 types, B: 8 types 7. Consider the C NMR spectrum of propan-2-ol. How many signals would you expect in the broadband decoupled carbon-13 spectrum of this molecule? a. b. 2 8. In what region of the 'H-NMR spectrum would you expect to have a signal for the -CH2- (methylene group) of diethyl ether, CH,CHOCH,CH3? b. 3-4 ppm a. 0-2 ppmm ppm c. 5-6 ppm d. 7-8 9. How many doublets are from propan-2-ol in the 'H NMR? d. 3
1. In which region would you look for C-H stretching modes? a. 2300-2200cm c. 3300-2700cm1 b. 1700-1600cm d. 1800-1600cm 2. Which type of radiation is used in nuclear magnetic resonance spectroscopy? b. ultraviolet light a. infra-red light visible light c. radio waves d. 3. Which area of the IR spectrum is called the "finger print region"? a. 4000-2800cm c. 2000-1400cm b. 2800-2000cm d. 1400-600cm 4. Which one of the following alkenes does not show any IR band for the symmetric C-C (triple) bond stretch? a. 1-pentyne b. 2-pentyne c. 1-butyne d. 2-butyne 5. What is the mass of the "molecular ion (parent ion)" M generated from methylcyclohexane? a. b. 96 c. 98 d. 100 6. Consider the structure isomers, 1-bromopropane (A) and 2-bromo- propane (B), respectively. How many unique proton peaks are in its 'H NMR? b. A: 3 types, B: 2 types a. A: 4 types, B: 4 types c. A: 2 types, B: 3 types . A: 8 types, B: 8 types 7. Consider the C NMR spectrum of propan-2-ol. How many signals would you expect in the broadband decoupled carbon-13 spectrum of this molecule? a. b. 2 8. In what region of the 'H-NMR spectrum would you expect to have a signal for the -CH2- (methylene group) of diethyl ether, CH,CHOCH,CH3? b. 3-4 ppm a. 0-2 ppmm ppm c. 5-6 ppm d. 7-8 9. How many doublets are from propan-2-ol in the 'H NMR? d. 3
Nelly StrackeLv2
31 May 2019