Foundations of College Chemistry, Binder Ready Version
15th Edition
ISBN: 9781119083900
Author: Morris Hein, Susan Arena, Cary Willard
Publisher: WILEY
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Chapter 20, Problem 23RQE
Interpretation Introduction
Interpretation:
Number of units of cellulose and starch present has to be calculated and the length of molecules of cellulose and starch has to be calculated.
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Part VII. The H-NMR of a compound with molecular formula C5 H 10 O2 is given below.
Find the following:
(a) The no. of protons corresponding to each signal in the spectra
(6) Give the structure of the compound and assign the signals to each
proton in the compound.
a
70.2
Integration Values
C5H10O2
b
47.7
C
46.5
d
69.5
3.6 3.5
3.4 3.3 3.2 3.1 3.0
2.9 2.8
2.7
2.6 2.5
2.4 2.3 2.2 2.1 2.0
Chemical Shift (ppm)
1.9
1.8
1.7 1.6
1.5
1.4 1.3 1.2
1.1 1.0
0.9 0.8
Part 111. 1 H-NMR spectrum of a compound with integration values in red is given below.
Answer the following:
(a) write the signals in the 'H-NMR spectrum to the corresponding protons on the structure
of the molecule below.
(b) Identify the theoretical multiplicities for each proton in the compound. Also give the possible.
complex splitting patterns assuming J values are not similar.
там
Br
22
2
3
6
4 7.2 7.0 6.8 6.6 6.4 6.2 6.0 5.8 5.6 5.4 5.2 5.0 4.8 4.6 4.4 4.2 4.0 3.8 3.6 3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0
Chemical Shift (ppm)
ra.
Br
2
3
6
6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
Chemical Shift (ppm)
2
2
Br
7.3
7.2
7.1
7.0 6.9
6.7 6.6 6.5
6.4
6.3
6.2
6.1
6.0
Chemical Shift (ppm)
5.9
5.8 5.7
5.5 5.4 5.3 5.2
5.0 4.9
1600°
1538°C
1493°C
In the diagram, the letter L indicates
that it is a liquid. Indicate its
components in the upper region
where only L is indicated.
The
iron-iron carbide phase
diagram.
Temperature (°C)
1400
8
1394°C
y+L
1200
2.14
y, Austenite
10000
912°C
800a
0.76
0.022
600
400
(Fe)
a, Ferrite
Composition (at% C)
15
1147°C
a + Fe3C
2
3
Composition (wt% C)
L
2500
4.30
2000
y + Fe3C
727°C
1500
Cementite (Fe3C)
1000
4
5
6
6.70
Temperature (°F)
Chapter 20 Solutions
Foundations of College Chemistry, Binder Ready Version
Ch. 20.2 - Prob. 20.1PCh. 20.3 - Prob. 20.2PCh. 20.4 - Prob. 20.3PCh. 20.4 - Prob. 20.4PCh. 20.4 - Prob. 20.5PCh. 20.5 - Prob. 20.6PCh. 20.6 - Prob. 20.7PCh. 20 - Prob. 1RQECh. 20 - Prob. 2RQECh. 20 - Prob. 3RQE
Ch. 20 - Prob. 4RQECh. 20 - Prob. 5RQECh. 20 - Prob. 6RQECh. 20 - Prob. 7RQECh. 20 - Prob. 8RQECh. 20 - Prob. 9RQECh. 20 - Prob. 10RQECh. 20 - Prob. 11RQECh. 20 - Prob. 12RQECh. 20 - Prob. 13RQECh. 20 - Prob. 14RQECh. 20 - Prob. 15RQECh. 20 - Prob. 16RQECh. 20 - Prob. 17RQECh. 20 - Prob. 18RQECh. 20 - Prob. 19RQECh. 20 - Prob. 20RQECh. 20 - Prob. 21RQECh. 20 - Prob. 22RQECh. 20 - Prob. 23RQECh. 20 - Prob. 24RQECh. 20 - Prob. 25RQECh. 20 - Prob. 26RQECh. 20 - Prob. 27RQECh. 20 - Prob. 28RQECh. 20 - Prob. 29RQECh. 20 - Prob. 30RQECh. 20 - Prob. 31RQECh. 20 - Prob. 32RQECh. 20 - Prob. 33RQECh. 20 - Prob. 34RQECh. 20 - Prob. 35RQECh. 20 - Prob. 36RQECh. 20 - Prob. 37RQECh. 20 - Prob. 38RQECh. 20 - Prob. 39RQECh. 20 - Prob. 40RQECh. 20 - Prob. 41RQECh. 20 - Prob. 42RQECh. 20 - Prob. 43RQECh. 20 - Prob. 44RQECh. 20 - Prob. 45RQECh. 20 - Prob. 46RQECh. 20 - Prob. 47RQECh. 20 - Prob. 48RQECh. 20 - Prob. 49RQECh. 20 - Prob. 50RQECh. 20 - Prob. 51RQECh. 20 - Prob. 52RQECh. 20 - Prob. 53RQECh. 20 - Prob. 54RQECh. 20 - Prob. 55RQECh. 20 - Prob. 56RQECh. 20 - Prob. 57RQECh. 20 - Prob. 58RQECh. 20 - Prob. 59RQECh. 20 - Prob. 60RQECh. 20 - Prob. 61RQECh. 20 - Prob. 62RQECh. 20 - Prob. 63RQECh. 20 - Prob. 64RQECh. 20 - Prob. 65RQECh. 20 - Prob. 66RQECh. 20 - Prob. 67RQECh. 20 - Prob. 68RQECh. 20 - Prob. 69RQECh. 20 - Prob. 70RQECh. 20 - Prob. 71RQECh. 20 - Prob. 72RQECh. 20 - Prob. 73RQECh. 20 - Prob. 74RQECh. 20 - Prob. 75RQECh. 20 - Prob. 76RQECh. 20 - Prob. 77RQECh. 20 - Prob. 78RQECh. 20 - Prob. 79RQECh. 20 - Prob. 80RQE
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