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 15, Problem 15.4QAP
Interpretation Introduction
(a)
Interpretation:
The compound which has greater fluorescence quantum yield from the following should be selected:
Concept introduction:
There are different cases to check the magnitude of fluorescence quantum yield of the compound. Any compound having these cases will surely have greater fluorescence quantum yield.
Interpretation Introduction
(b)
Interpretation:
The compound which has greater fluorescence quantum yield from the following should be selected:
Concept introduction:
There are different scenarios to check whether the magnitude of fluorescence quantum yield of a compound is more or less. Any compound containing these scenarios will surely have more fluorescence quantum yield.
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Q3: Curved Arrows, Lewis Acids & Bases, Nucleophiles and Electrophiles
Considering the following reactions:
a) Predict the products to complete the reactions.
b) Use curved electron-pushing arrows to show the mechanism for the reaction in
the forward direction. Redraw some of the compounds to explicitly illustrate all
bonds that are broken and all bonds that are formed.
c) Label Lewis acids and bases, nucleophiles and electrophiles in the reactions.
A.
S
+
AICI 3
B.
+
H₂O
3. A thermometer is placed in a test tube of chipped ice at -5.0 °C. The temperature is recorded at the
time intervals shown below until room temperature is reached. Plot the data given below on graph
paper and explain all flat, horizontal portions of the curve. Plot time on the X-axis!
Time (min)
Temperature (°C)
0
-5.0
2
-2.5
4
-1.0
6
0.0
10
0.0
15
0.0
20
0.0
25
0.0
30
1.5
35
4.0
40
8.0
45
11.5
50
15.0
55
17.5
60
19.0
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20.0
70
20.0
75
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80
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Naming the Alkanes
a) Write the IUPAC nomenclature of the compound below
b) Draw 4-isopropyl-2,4,5-trimethylheptane, identify the primary, secondary, tertiary, and
quaternary carbons.
c) Rank pentane, neopentane and isopentane for boiling point.
pentane:
H3C-CH2-CH2-CH2-CH3
neopentane:
CH3
H3C-Ċ-CH3
I
CH3
isopentane:
CH3
H3C-CH2-CH-CH3
Chapter 15 Solutions
Principles of Instrumental Analysis
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