I need help with 3-8 3) The IR absorption at 1630 cm* belongs to-1(a) CH3-C=N (b) CH3-CH=C(c) CH2=CH-CH=CH-CH2 (d) H-C=C-CH;CH34) The "m/z value" and "the relative abundance" for M+2 peak in (CH3)¿CH-Br?(a) 123 and 25%(b) 125 and 50%(c) 125 and 75%(d) 123 and 50%5) Which one of the compounds shows an absence of M' peak?(a) CH;CH2CHO(b) CH;COCH3(c) CH;(CH2);NH2(d) CH3(CH2);OH6) In the molecule, CH3CH,CH(Br)2, the 'H NMR signal for "CH" would show(a) 3.4 ppm (triplet)(b) 1.3 ppm (triplet)(c) 5.2 ppm (triplet)(d) 7.1 ppm (trip7)In molecules below, circle the group that showsthe most down fieldin both 'H and 1°C NMR shift.CH3-CH2-CH2-O-CH-(CH3)2 CICH2-CH=CH-CH38) In the molecule CH3-CH2-C=N, 1C NMR shifted atto show the main functional group (nitrile)-(a) 868(b) 538(c) 1228(d) 10289) Which one of the molecules would generate the following 'H NMR spectrum?Brdoublutquarter1,43CH3 Cl.4)Mouz

The correct option are: Note: as per company policy we are supposed to answer first three questions…

-1 3) The IR absorption at 1630 cm belongs to (a) CH;-C=N )CH>-CH=CHICH, (c) CH2=CH-CH=CH-CH2 (d) H-C=C-CH,CH3 4) The "m/z value" and "the relative abundance" for M+2 peak in (CH3)2CH-Br? (a) 123 and 25% (b) 125 and 50% (c) 125 and 75% (d) 123 and 50% 5) Which one of the compounds shows an absence of M* peak? (a) CH3CH,CHO (b) CH;COCH3 (c) CH3(CH2);NH2 (d) CH;(CH2);OH 6) In the molecule, CH,CH,CH(Br)2, the 'H NMR signal for "CH" would show (c) 5.2 ppm (triplet) (d) 7.1 ppm (trip (a) 3.4 ppm (triplet) (b) 1.3 ppm (triplet)

-1 3) The IR absorption at 1630 cm belongs to (a) CH;-C=N )CH>-CH=CHICH, (c) CH2=CH-CH=CH-CH2 (d) H-C=C-CH,CH3 4) The "m/z value" and "the relative abundance" for M+2 peak in (CH3)2CH-Br? (a) 123 and 25% (b) 125 and 50% (c) 125 and 75% (d) 123 and 50% 5) Which one of the compounds shows an absence of M* peak? (a) CH3CH,CHO (b) CH;COCH3 (c) CH3(CH2);NH2 (d) CH;(CH2);OH 6) In the molecule, CH,CH,CH(Br)2, the 'H NMR signal for "CH" would show (c) 5.2 ppm (triplet) (d) 7.1 ppm (trip (a) 3.4 ppm (triplet) (b) 1.3 ppm (triplet)

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

ChapterL3: Carbon (13c) Nmr Spectroscopy

Section: Chapter Questions

Problem 6CTQ

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