Principles of Instrumental Analysis, 6th Edition
6th Edition
ISBN: 9788131525579
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cenage Learning
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Chapter 11, Problem 11.9QAP
Interpretation Introduction
Interpretation:
Differentiate between isobaric interference and polyatomic ion interference in ICPMS.
Concept introduction:
ICPMS stands for inductively coupled plasma mass spectrography. This is an important type of
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Part VI.
Ca H 10 O is the molecular formula of compound Tom and gives the
in the table below. Give a possible structure for compound Tom.
13C
Signals summarized
C1
C2
C3
C4
C5
C6
C7
13C shift (ppm)
23.5
27.0
33.0
35.8
127
162
205
DEPT-90
+
DEPT-135
+
+
2. Using the following data to calculate the value of AvapH o of water at 298K. AvapH o of water at
373K is 40.7 kJ/mol; molar heat capacity of liquid water at constant pressure is 75.2J mol-1 K-1 and
molar heat capacity of water vapor at constant pressure is 33.6 J mol-1 K-1.
Part VII. Below are the 'HNMR
13
3 C-NMR, COSY 2D- NMR, and HSQC 20-NMR (Similar with HETCOR but axes are reversed) spectra of an
organic compound with molecular formula C6H13 O. Assign chemical shift values to the H and c atoms of the
compound. Find the structure. Show complete solutions.
Predicted 1H NMR Spectrum
ли
4.7 4.6 4.5 4.4 4.3 4.2 4.1 4.0 3.9 3.8 3.7 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 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8
f1 (ppm)
Chapter 11 Solutions
Principles of Instrumental Analysis, 6th Edition
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- 7. Assign all of the protons on the spectrum below. A B 2 C E 2 1 3 6 4 3 2 1 0arrow_forwarde. If (3R,4R)-3,4-dichloro-2,5-dimethylhexane and (3R,4S)-3,4-dichloro-2,5-dimethylhexane are in a solution at the same concentration, would this solution be expected to rotate plane polarized light (that is, be optically active)? Please provide your reasoning for your answer. [If you read this problem carefully, you will not need to draw out the structures to arrive at your answer...]arrow_forward1. How many neighbors does the proton that produces the multiplet below have? 2. 3. اللـ Draw a partial structure from the multiplet below. (The integration of the multiplet is 6) M Using the additivity constants found in appendix G of your lab manual, calculate the approximate chemical shifts of the protons indicated below. (Show your work!!!) B A Br SHarrow_forward
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