Principles of Instrumental Analysis
7th Edition
ISBN: 9781305577213
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cengage Learning
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Chapter 9, Problem 9.10QAP
Interpretation Introduction
Interpretation:
The process of analysis of aqueous CaCl2 solution that occurs in laminar flow burner needs to be described.
Concept introduction:
Analysis of aqueous CaCl2is done by the absorption profile of given elements which are explained by the relationship of absorption and height of flame.
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(c) The data set below represents the surface tension data for aqueous solutions of 3-
methylbutanoic acid [(CH3)2CHCH₂COOH] at 25°C.
[C] [mol.dm³] 0
Y[mN.m']
72.7
0.009
64.6
0.026
59.0
0.065
51.3
0.135
47.0
(i) Calculate the surface excess of 3-methylbutanoic acid (in mol.m2) and
(ii)
Hence estimate the molecular cross sectional area (in nm²) for this surface active
molecule.
(iii) Compare your estimate with the molecular cross sectional area one might expect
for n-butanoic acid and account for the difference, if any, between the two surface
active molecules.
Iron- and aluminum-oxide surfaces will generally adsorb cations more
estrongly at
lower pH than at higher pH.
True
False
2. What is the distinction between matrix and dispersed phases in a composite material?
Chapter 9 Solutions
Principles of Instrumental Analysis
Ch. 9 - Prob. 9.1QAPCh. 9 - Prob. 9.2QAPCh. 9 - Why is an electrothermal atomizer more sensitive...Ch. 9 - Prob. 9.4QAPCh. 9 - Prob. 9.5QAPCh. 9 - Prob. 9.6QAPCh. 9 - Prob. 9.7QAPCh. 9 - Prob. 9.8QAPCh. 9 - Prob. 9.9QAPCh. 9 - Prob. 9.10QAP
Ch. 9 - Prob. 9.11QAPCh. 9 - Prob. 9.12QAPCh. 9 - Prob. 9.13QAPCh. 9 - Prob. 9.14QAPCh. 9 - Prob. 9.15QAPCh. 9 - Prob. 9.16QAPCh. 9 - Prob. 9.17QAPCh. 9 - In the concentration range of 1 to 100 g/mL P,...Ch. 9 - Prob. 9.19QAPCh. 9 - Prob. 9.20QAPCh. 9 - Prob. 9.21QAPCh. 9 - The chromium in an aqueous sample was determined...Ch. 9 - Prob. 9.23QAP
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