(a) Interpretation: The compound, from the given pair, that has higher boiling point is to be identified. Concept introduction: The boiling point of compound that has linear hydrocarbon chain is higher than the boiling point of compound that has branched chains. The strength of intermolecular interactions among linear compounds is very high.

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Answer 1

Question

Chapter 7, Problem 7.48P

Interpretation Introduction

(a)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of compound that has linear hydrocarbon chain is higher than the boiling point of compound that has branched chains. The strength of intermolecular interactions among linear compounds is very high.

Interpretation Introduction

(b)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of two alkyl halides that has same number of carbon atoms depends upon the size of halide. As the size if halide increases, boiling point increases. This is because the polarity of alkyl halide increases with the increase in size of halide.

Interpretation Introduction

(c)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of alkyl halides is higher than that of alkanes having the same number of carbon atoms. This is due to the presence of dipole moment in alkyl halides.

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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

Answer 2

Question

Chapter 7, Problem 7.48P

Interpretation Introduction

(a)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of compound that has linear hydrocarbon chain is higher than the boiling point of compound that has branched chains. The strength of intermolecular interactions among linear compounds is very high.

Interpretation Introduction

(b)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of two alkyl halides that has same number of carbon atoms depends upon the size of halide. As the size if halide increases, boiling point increases. This is because the polarity of alkyl halide increases with the increase in size of halide.

Interpretation Introduction

(c)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of alkyl halides is higher than that of alkanes having the same number of carbon atoms. This is due to the presence of dipole moment in alkyl halides.

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Answer 3

Question

Chapter 7, Problem 7.48P

Interpretation Introduction

(a)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of compound that has linear hydrocarbon chain is higher than the boiling point of compound that has branched chains. The strength of intermolecular interactions among linear compounds is very high.

Interpretation Introduction

(b)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of two alkyl halides that has same number of carbon atoms depends upon the size of halide. As the size if halide increases, boiling point increases. This is because the polarity of alkyl halide increases with the increase in size of halide.

Interpretation Introduction

(c)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of alkyl halides is higher than that of alkanes having the same number of carbon atoms. This is due to the presence of dipole moment in alkyl halides.

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Answer 4

Question

Chapter 7, Problem 7.48P

Interpretation Introduction

(a)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of compound that has linear hydrocarbon chain is higher than the boiling point of compound that has branched chains. The strength of intermolecular interactions among linear compounds is very high.

Interpretation Introduction

(b)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of two alkyl halides that has same number of carbon atoms depends upon the size of halide. As the size if halide increases, boiling point increases. This is because the polarity of alkyl halide increases with the increase in size of halide.

Interpretation Introduction

(c)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of alkyl halides is higher than that of alkanes having the same number of carbon atoms. This is due to the presence of dipole moment in alkyl halides.

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Answer 5

Chapter 7, Problem 7.48P

Interpretation Introduction

(a)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of compound that has linear hydrocarbon chain is higher than the boiling point of compound that has branched chains. The strength of intermolecular interactions among linear compounds is very high.

Interpretation Introduction

(b)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of two alkyl halides that has same number of carbon atoms depends upon the size of halide. As the size if halide increases, boiling point increases. This is because the polarity of alkyl halide increases with the increase in size of halide.

Interpretation Introduction

(c)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of alkyl halides is higher than that of alkanes having the same number of carbon atoms. This is due to the presence of dipole moment in alkyl halides.

Answer 6

Chapter 7, Problem 7.48P

Interpretation Introduction

(a)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of compound that has linear hydrocarbon chain is higher than the boiling point of compound that has branched chains. The strength of intermolecular interactions among linear compounds is very high.

Answer 7

Chapter 7, Problem 7.48P

Interpretation Introduction

(a)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of compound that has linear hydrocarbon chain is higher than the boiling point of compound that has branched chains. The strength of intermolecular interactions among linear compounds is very high.

Answer 8

Interpretation Introduction

(b)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of two alkyl halides that has same number of carbon atoms depends upon the size of halide. As the size if halide increases, boiling point increases. This is because the polarity of alkyl halide increases with the increase in size of halide.

Answer 9

Interpretation Introduction

(b)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of two alkyl halides that has same number of carbon atoms depends upon the size of halide. As the size if halide increases, boiling point increases. This is because the polarity of alkyl halide increases with the increase in size of halide.

Answer 10

Interpretation Introduction

(c)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of alkyl halides is higher than that of alkanes having the same number of carbon atoms. This is due to the presence of dipole moment in alkyl halides.

Answer 11

Interpretation Introduction

(c)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of alkyl halides is higher than that of alkanes having the same number of carbon atoms. This is due to the presence of dipole moment in alkyl halides.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 7 - Classify each alkyl halide as 1 , 2, or 3.Ch. 7 - Problem 7.1 Telfairine, a naturally occurring...Ch. 7 - Draw the structure of an alkyl bromide with...Ch. 7 - Give the IUPAC name for each compound. a. b. c. d.Ch. 7 - Prob. 7.5P Ch. 7 - An sp3 hybridized CCl bond is more polar than an...Ch. 7 - Prob. 7.7P Ch. 7 - Problem 7.6 Identify the nucleophile and leaving...Ch. 7 - Prob. 7.9P Ch. 7 - Prob. 7.10P

Solution Summary: The author explains that the boiling point of linear hydrocarbon chains is higher than that of branched chains, and the strength of intermolecular interactions among linear compounds is high.

Concept explainers

(c)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of alkyl halides is higher than that of alkanes having the same number of carbon atoms. This is due to the presence of dipole moment in alkyl halides.

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Chapter 7 Solutions

Solution Summary: The author explains that the boiling point of linear hydrocarbon chains is higher than that of branched chains, and the strength of intermolecular interactions among linear compounds is high.

Concept explainers

(c) Interpretation: The compound, from the given pair, that has higher boiling point is to be identified. Concept introduction: The boiling point of alkyl halides is higher than that of alkanes having the same number of carbon atoms. This is due to the presence of dipole moment in alkyl halides.

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Chapter 7 Solutions

(c)

Interpretation: The compound, from the given pair, that has higher boiling point is to be identified.

Concept introduction: The boiling point of alkyl halides is higher than that of alkanes having the same number of carbon atoms. This is due to the presence of dipole moment in alkyl halides.