12- An unknown compound, C8H12, gave the following NMR spectrum: Triplet at 1.21 ppm (3H) Singlet at 2.30 ppm (3H) Quartet at 2.60 ppm (2H) Singlet at 7.04 ppm (4H) What is the structure of the compound? CH₂CH₂CH 1. II. III. CH3 CH₂CH3 CHCH3 CH3 IV. CH₂- V. CH3- CH₂ CHI CH₂ CH₂

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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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11-How many signals would you expect to see in the 1H NMR spectrum of the
following compound?
A) 1
B) 2
C) 4
D) 3
A) I
B) II
C) III
D) IV
1.
12- An unknown compound, C9H12, gave the following NMR spectrum:
Triplet at 1.21 ppm (3H) Singlet at 2.30 ppm (3H) Quartet at 2.60 ppm (2H) Singlet at
7.04 ppm (4H) What is the structure of the compound?
CH₂CH₂CH3
II.
III.
H
CH3
H
Br
CH₂CH3
CHCH3
CH3
IV.
CH₂
V. CH3
7
CH₂
CH3
CH₂
CH₂
Transcribed Image Text:11-How many signals would you expect to see in the 1H NMR spectrum of the following compound? A) 1 B) 2 C) 4 D) 3 A) I B) II C) III D) IV 1. 12- An unknown compound, C9H12, gave the following NMR spectrum: Triplet at 1.21 ppm (3H) Singlet at 2.30 ppm (3H) Quartet at 2.60 ppm (2H) Singlet at 7.04 ppm (4H) What is the structure of the compound? CH₂CH₂CH3 II. III. H CH3 H Br CH₂CH3 CHCH3 CH3 IV. CH₂ V. CH3 7 CH₂ CH3 CH₂ CH₂
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