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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Question
Chapter 31, Problem 31.10QAP
Interpretation Introduction
Interpretation:
The cause of glass transition for
Concept introduction:
The glass transition is also known as glass−liquid transition an associated with the process in which glass is converted into a liquid state. Vitrification is a reverse process to glass−liquid transition.
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Why does fluorescence tend to be the mirror image of absorption?
QUESTION 4
Answer the following questions based on the given table.
Compound
Chromophores
Wavelength (Ama)
Acetone
C=0
186 nm and 280 nm
190 nm
Butene
C=C
Fe(SCN)
aqueous solution of Ni²*
475 nm
400 nm
a) Based on the given chromophores, determine the types of electronic transitions which
occur for each of acetone and butene.
b) Provide the type of electronic transition which occur for the aqueous solution of Ni".
c) Iron(III) thiocyanate, Fe(SCN)* is an example of a charge-transfer complex. Outline the
steps of the electron transfer process in this complex.
What is the difference between an absorption spectrum and a standard curve?
Chapter 31 Solutions
Principles of Instrumental Analysis
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