Laboratory Techniques in Organic Chemistry
4th Edition
ISBN: 9781464134227
Author: Jerry R. Mohrig, David Alberg, Gretchen Hofmeister, Paul F. Schatz, Christina Noring Hammond
Publisher: W. H. Freeman
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Question
Chapter 5, Problem 4Q
Interpretation Introduction
Interpretation:
The method to calibrate automatic pipet should be determined.
Concept introduction:
The accuracy of the measuring device can only be judge by calibration of the device. Calibration is the method to perform measurement whose results is known. The instrument is adjusted such that its readings or measurement values give the correction factor so that subsequent readings after calibration can be corrected for the known instrument error. In calibration, the comparison of the measured values is done with the standard value of the known sample.
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Ben zaphone-5008
ne
Acetic Acid
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Benzopin-
a col
030445
Benzopin
a Colone 0.06743
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Benzopin
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Assign ALL signals for the proton and carbon NMR spectra on the following pages.
7.5
1.93
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A
4
3
5
The Joh.
9
7
8
1
2
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0 ppm
9
7
8
0.86
OH 10
4
3
5
1
2
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
ppm
9
7
8
CI
4
3
5
1
2
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
2.21
4.00
1.5
2.00
2.07
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ppm
2.76
Chapter 5 Solutions
Laboratory Techniques in Organic Chemistry
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