2.200LODFor an unknown compound with a molecular ion of 101 m/z:a.Use the molecular ion to propose at least two molecular formulas. (show your work)b.What is the DU for each of your possible formulas? (show your work)C.Solve the structure and assign each of the following spectra.8642(ppm)15010050ō (ppm)40003000200015001000500HAVENUMBERI-11

Molecular Ion at 101 m/z: A molecular mass of 101 (in whole‐number units) Is a small molecule. 1H…

Answered: 2. 200 LOD For an unknown compound with…

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

ChapterL4: Proton (1h) Nmr Spectroscopy

Section: Chapter Questions

Problem 13E

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Following is the mass spectrum of an unknown compound. The two highest peaks are at m/z 120 and 122. Suggest a structure for this compound. (Data from http://webbook.nist.gov/chemistry/.)
Write molecular formulas for compounds that show the following molecular ions in their high-resolution mass spectra, assuming that C, H, N, and O might be present. The exact atomic masses are: 1.007 83 (1H), 12.000 00 (12C), 14.003 07 (14N), 15.994 91 (16O). (a) M+=98.0844 (b) M+=123.0320
Following is the mass spectrum of 3-methyl-2-butanol. The molecular ion m/z 88 does not appear in this spectrum. Propose structural formulas for the cations of m/z 45, 43, and 41.
7. 100 80 Relative Intensity 8 20- 0 MS-NW-1589 25 50 75 100 m/z 125 c. Propose a structure for this compound. b. Calculate a possible molecular formula for this compound 150 a. This compound contains C, H, and one other atom. Identify the other atom from the mass spectrum and explain your reasoning. 175
25. Match a structure from the list below to the following IR spectra. Place the letter of the structure in the blank below the spectrum. a. benzoic acid, C6H5COOH b. methanol, CH3OH c. benzaldehyde, C6H5CHO d. phenol, C6H5OH e. methyl acetate, CH3COOCH3 100 D 4100 LOD 50 HIT-NO-2237 |SCORE- ( Spectrum 1 D 3000 3347 B 1116 62 3336 1030 4 662 58 8 2946 18 2033 22 2622 77 2046 84 1460 47 |HIT-NO=1060 |SCORE= ( Spectrum 2 4000 1000 3229 4 2484 68 9048 15 3028 18 2962 29 2837 98 39 2725 41 2699 46 1933 57 1847 62 1711 64 1606 26 1598 10 1669 67 SOBS-NO-3302 m 1632 66 1501 14 3474 7 1372 23 43 1936 1315 47 1293 60 2008 SDBS-NO=554 HAVENUERI p 2000 1234 15 1169 31 1153 25 1072 27 1024 49 889 41 881 60 826 36 812 23 754 8 691 6 617 44 IR-NIDA-63354 : LIQUID FILM HAVENUISERI 555 18 602 20 1380 1000 IR-NIDA-29806 : LIQUID FILM mummum 1500 300 1000 500
The following is a mass spectrum of octane. 100 Relative Intensity 80 60 40 20 0 10 20 30 40 50 60 x Incorrect. m/z 70 80 90 100 110 Which peak represents the molecular ion? The molecular ion peak is expected to appear at m/z = amu.
Part V. Label ad match the carbons in compounds Jane and Diane w/ the corresponding peak no. in the Spectra (Note: use the given peak no. To label the carbons, other peak no are intentionally omitted) 7 4 2 -0.13 -0.12 -0.11 -0.10 -0.08 8 CI Jane 1 -0.09 5 210 200 190 180 170 160 150 140 130 120 110 100 -8 90 f1 (ppm) 11 8 172.4 172.0 f1 (ppr HO CI NH Diane 7 3 11 80 80 -80 -R 70 60 60 2 5 -8 50 40 8. 170 160 150 140 130 120 110 100 90 -0 80 70 20 f1 (ppm) 15 30 -20 20 -60 60 -0.07 -0.06 -0.05 -0.04 -0.03 -0.02 -0.01 -0.00 -0.01 10 -0.17 16 15 56 16 -0.16 -0.15 -0.14 -0.13 -0.12 -0.11 -0.10 -0.09 -0.08 -0.07 -0.06 -0.05 -0.04 17.8 17.6 17.4 17.2 17.0 f1 (ppm) -0.03 -0.02 550 106 40 30 20 20 -0.01 -0.00 F-0.01 10 0
you have an uknown compound you need to identify its EI mass spectrum shows a peak at m/z 198 with an intensity of 57, and a peak at m/z 200 with an intensity of 19. there are no peaks with m/z 200. what does this mean? A. the compound contains a nitrogen atom B. the compound contains approximately 30 carbon atoms C. the compound contains a bromine atom D. the compound contains a chlorine atom
B. MASS SPECTRUM Identify the following from the low resolution mass spectrum of the unknown compound: 100 Relative intensity LT. 80 80 60 40 20 Base peak 0 20 Molecular lon peak 40 Mass Spectrum of Compound P 121 152 60 C. DOUBLE BOND EQUIVALENTS Calculate the DBE of the unknown compound. m/z This information indicates, for example, the presence of 100 Mass spectrum of the compound. 120 140 160 a + x
Determine whether each of the IR spectra given is consistent with the structure of an 50 A.Alcohol B. ketone C.Aldehyde D.carboxylic acid E. primary amine, F.secondary amine. D 4000 3000 2008 HAVENUMERI 1500 1000 تسلام $30
Chemistry
Consider the mass spectrum below. 100 80- 60- 20 0.0- 0.0 60 100 miz SDBS, National Institute of Advanced Industrial Science and Technology Which peak is the molecular ion? Choose one OA OB OD. OG

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