Introduction to General, Organic and Biochemistry
12th Edition
ISBN: 9780357119303
Author: Bettelheim, Frederick A., Brown, William H., Campbell, Mary K., FARRELL, Shawn O., Torres, Omar
Publisher: Cengage Learning
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Question
Chapter 16, Problem 31P
Interpretation Introduction
(a)
Interpretation:
The structural formula for 1,3-Dihydroxy-2-propanone should be drawn.
Concept Introduction:
1,3-Dihydroxy-2-propanone more commonly known as dihydroxyacetone and it is the ingredient in artificial tanning agents.
Interpretation Introduction
(b)
Interpretation:
Is 1,3-Dihydroxy -2-propanone is soluble or insoluble in water.
Concept Introduction:
1,3-Dihydroxy -2-propanone more commonly known as dihydroxyacetone and it is the ingredient in artificial tanning agents.
Interpretation Introduction
(c)
Interpretation:
The structural formula for the product formed by reduction 1,3-Dihydroxy-2-propanone with
Concept Introduction:
1,3-Dihydroxy-2-propanone more commonly known as dihydroxyacetone and it is the ingredient in artificial tanning agents.
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(a
4 shows scanning electron microscope (SEM) images of extruded
actions of packing bed for two capillary columns of different diameters,
al 750 (bottom image) and b) 30-μm-i.d. Both columns are packed with the
same stationary phase, spherical particles with 1-um diameter.
A) When the columns were prepared, the figure shows that the column with
the larger diameter has more packing irregularities. Explain this observation.
B) Predict what affect this should have on band broadening and discuss your
prediction using the van Deemter terms.
C) Does this figure support your explanations in application question 33?
Explain why or why not and make any changes in your answers in light of
this figure.
Figure 4 SEM images of
sections of packed columns
for a) 750 and b) 30-um-i.d.
capillary columns.³
fcrip
= ↓ bandwidth Il temp
32. What impact (increase, decrease, or no change) does each of the following conditions have on the individual
components of the van Deemter equation and consequently, band broadening?
Increase temperature
Longer column
Using a gas mobile phase
instead of liquid
Smaller particle stationary phase
Multiple Paths
Diffusion
Mass Transfer
34. Figure 3 shows Van Deemter plots for a solute molecule using different column inner diameters (i.d.).
A) Predict whether decreasing the column inner diameters increase or decrease bandwidth.
B) Predict which van Deemter equation coefficient (A, B, or C) has the greatest effect on increasing or
decreasing bandwidth as a function of i.d. and justify your answer.
Figure 3 Van Deemter plots for hydroquinone using different column inner diameters (i.d. in μm). The data was
obtained from liquid chromatography experiments using fused-silica capillary columns packed with 1.0-μm particles.
35
20
H(um)
큰 20
15
90
0+
1500
100
75
550
01
02
594
05
μ(cm/sec)
30
15
10
Chapter 16 Solutions
Introduction to General, Organic and Biochemistry
Ch. 16.2 - Problem 17-1 Wrtie the IUPAC name for each...Ch. 16.2 - Prob. 16.2QCCh. 16.2 - Prob. 16.3QCCh. 16.4 - Prob. 16.4QCCh. 16.4 - Prob. 16.5QCCh. 16.4 - Problem 17-6 Show the reaction of benzaldehyde...Ch. 16.4 - Problem 17-7 Identify all hemiacetals and acetals...Ch. 16.5 - Prob. 16.8QCCh. 16 - 17-9 Answer true or false. (a) The one aldehyde...Ch. 16 - Prob. 2P
Ch. 16 - 17-11 What is the difference in structure between...Ch. 16 - 17-12 Is it possible for the carbon atom of a...Ch. 16 - 17-13 Which compounds contain carbonyl groups?Ch. 16 - 17-14 Following are structural formulas for two...Ch. 16 - 17-15 Draw structural formulas for the four...Ch. 16 - Prob. 8PCh. 16 - Prob. 9PCh. 16 - 17-18 Draw structural formulas for these ketones....Ch. 16 - 17-19 Write the JUPAC names for these compounds.Ch. 16 - Prob. 12PCh. 16 - 17-2 1 Explain why each name is incorrect. Write...Ch. 16 - Prob. 14PCh. 16 - Prob. 15PCh. 16 - 17-24 In each pair of compounds, select the one...Ch. 16 - Prob. 17PCh. 16 - 17-26 Account for the fact that acetone has a...Ch. 16 - 17-27 Pentane, 1-butanol, and butanal all have...Ch. 16 - 17-28 Show how acetaldehyde can form hydrogen...Ch. 16 - 17-29 Why can’t two molecules of acetone form a...Ch. 16 - 17-30 Answer true or false. (a) The reduction of...Ch. 16 - 17-3 1 Draw a structural formula for the principal...Ch. 16 - Prob. 24PCh. 16 - 17-33 What simple chemical test could you use to...Ch. 16 - 17-34 Explain why liquid aldehydes are often...Ch. 16 - 17-35 Suppose that you take a bottle of...Ch. 16 - 17-36 Explain why the reduction of an aldehyde...Ch. 16 - Prob. 29PCh. 16 - Prob. 30PCh. 16 - Prob. 31PCh. 16 - Prob. 32PCh. 16 - Prob. 33PCh. 16 - Prob. 34PCh. 16 - Prob. 35PCh. 16 - Prob. 36PCh. 16 - Prob. 37PCh. 16 - Prob. 38PCh. 16 - 17-47 What is the characteristic structural...Ch. 16 - Prob. 40PCh. 16 - Prob. 41PCh. 16 - Prob. 42PCh. 16 - Prob. 43PCh. 16 - Prob. 44PCh. 16 - Prob. 45PCh. 16 - 17-54 Following is the structure of...Ch. 16 - Prob. 47PCh. 16 - Prob. 48PCh. 16 - Prob. 49PCh. 16 - Prob. 50PCh. 16 - Prob. 51PCh. 16 - 17-60 1-Propanol can be prepared by the reduction...Ch. 16 - Prob. 53PCh. 16 - 17-62 Show how to bring about these conversions....Ch. 16 - Prob. 55PCh. 16 - Prob. 56PCh. 16 - Prob. 57PCh. 16 - Prob. 58PCh. 16 - 17-67 Draw structural formulas for these...Ch. 16 - Prob. 60PCh. 16 - 17-69 Propanal (bp 49°C) and 1-propanol (bp 97°C)...Ch. 16 - 17-70 What simple chemical test could you use to...Ch. 16 - Prob. 63PCh. 16 - Prob. 64PCh. 16 - Prob. 65PCh. 16 - 17-72 The following molecule is an enediol; each...Ch. 16 - 17-73 Alcohols can be prepared by the...Ch. 16 - 17-74 Glucose, C6H12O6, contains an aldehyde group...Ch. 16 - Prob. 69PCh. 16 - Prob. 70PCh. 16 - Prob. 71PCh. 16 - 17-78 Complete the following equation for these...Ch. 16 - 17-79 Write an equation for each conversion. (a)...Ch. 16 - Prob. 74P
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