7. Which compound has a 1H NMR spectrum consisting of one quartet, one triplet, dill (1 point) A) 2-chloro-4-methylpentane B) 3-chloro-2-methylpentane C) 3-chloro-3-methylpentane D) 1-chloro-2,2-dimethylbutane 8. How could you use 1H NMR spectroscopy to distinguish between the following two compounds? (1 point) A) I has 3 signals and II has 2 signals B) I has 4 signals and II has 3 signals C) I has 5 signals and II has 3 signals D) I has 3 signals and II has 4 signals 9. How many signals would you expect to find in the 13C NMR spectrum of the following compound? (1 point) A) 6 B) 7 C) 8 D) 9 10. Which compound matches the following spectroscopic data? (1 point) Infrared spectrum: 1720cm1 (intense) 1H NMR spectrum: 1.1 (doublet, 6H ), 2.1 (singlet, 3H ), 2.7 (septet, 1H) 13C NMR spectrum: 15,22,45,210 A) pentanal B) pent-2-en-1-ol C) 2-pentanone D) 3-methyl-2-butanone