Shown below is the structure of one of the methyl ester biodiesel products together with its 13c NMR spectrum. Several of the peaks in the NMR spectrum are indicated by letters, A - D and several of the protons in the structure are indicated by Roman numerals, I- IV. II III II II HC=CH HC=CH Hco n H3CO II CH2 CH2 CH3 IV B D A 180 160 140 120 100 PPM 40 20 80 60 Decide which of the carbons indicated I - IV correspond to which of the NMR signals, A - D.

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Chapter1: Chemical Foundations
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Shown below is the structure of one of the methyl ester biodiesel products together with its 13C
NMR spectrum. Several of the peaks in the NMR spectrum are indicated by letters, A - D and
several of the protons in the structure are indicated by Roman numerals, I- IV.
III II
II
II
HC=CH
HC=CH
H3CO II CH2
1.
CH2
CH3
IV
B
D
A
180
140
120
100
PPM
20
160
80
60
40
Decide which of the carbons indicated I - IV correspond to which of the NMR signals, A - D.
Transcribed Image Text:Shown below is the structure of one of the methyl ester biodiesel products together with its 13C NMR spectrum. Several of the peaks in the NMR spectrum are indicated by letters, A - D and several of the protons in the structure are indicated by Roman numerals, I- IV. III II II II HC=CH HC=CH H3CO II CH2 1. CH2 CH3 IV B D A 180 140 120 100 PPM 20 160 80 60 40 Decide which of the carbons indicated I - IV correspond to which of the NMR signals, A - D.
D
A
180
140
100
PPM
160
120
80
60
40
20
Decide which of the carbons indicated I - IV correspond to which of the NMR signals, A - D.
a. Choose the correct option for A [ Select]
b. Choose the correct option for B ( Select]
c. Choose the correct option for C Select]
d. Choose the correct option for D [Select]
>
>
Transcribed Image Text:D A 180 140 100 PPM 160 120 80 60 40 20 Decide which of the carbons indicated I - IV correspond to which of the NMR signals, A - D. a. Choose the correct option for A [ Select] b. Choose the correct option for B ( Select] c. Choose the correct option for C Select] d. Choose the correct option for D [Select] > >
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