Give reason for the lower boiling point of C O 2 than N a 2 C O 3 on the basis of structural units. Concept Introduction : Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

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Answer 1

Question

Chapter 9, Problem 32QAP

(a)

Interpretation Introduction

Interpretation:

Give reason for the lower boiling point of CO2 than Na2CO3 on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

(b)

Interpretation Introduction

Interpretation:

Give reason for the higher boiling point of N2H4 than

C2H6 on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

(c)

Interpretation Introduction

Interpretation:

Give reason for the lower boiling point of formic acid than benzoic acid, on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

(d)

Interpretation Introduction

Interpretation:

Give reason for the higher boiling point of CO than N2 on the basis of structural units.

Concept Introduction:

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

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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 9, Problem 32QAP

(a)

Interpretation Introduction

Interpretation:

Give reason for the lower boiling point of CO2 than Na2CO3 on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

(b)

Interpretation Introduction

Interpretation:

Give reason for the higher boiling point of N2H4 than

C2H6 on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

(c)

Interpretation Introduction

Interpretation:

Give reason for the lower boiling point of formic acid than benzoic acid, on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

(d)

Interpretation Introduction

Interpretation:

Give reason for the higher boiling point of CO than N2 on the basis of structural units.

Concept Introduction:

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

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Answer 3

Question

Chapter 9, Problem 32QAP

(a)

Interpretation Introduction

Interpretation:

Give reason for the lower boiling point of CO2 than Na2CO3 on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

(b)

Interpretation Introduction

Interpretation:

Give reason for the higher boiling point of N2H4 than

C2H6 on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

(c)

Interpretation Introduction

Interpretation:

Give reason for the lower boiling point of formic acid than benzoic acid, on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

(d)

Interpretation Introduction

Interpretation:

Give reason for the higher boiling point of CO than N2 on the basis of structural units.

Concept Introduction:

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

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Answer 4

Question

Chapter 9, Problem 32QAP

(a)

Interpretation Introduction

Interpretation:

Give reason for the lower boiling point of CO2 than Na2CO3 on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

(b)

Interpretation Introduction

Interpretation:

Give reason for the higher boiling point of N2H4 than

C2H6 on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

(c)

Interpretation Introduction

Interpretation:

Give reason for the lower boiling point of formic acid than benzoic acid, on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

(d)

Interpretation Introduction

Interpretation:

Give reason for the higher boiling point of CO than N2 on the basis of structural units.

Concept Introduction:

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

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Answer 5

Chapter 9, Problem 32QAP

(a)

Interpretation Introduction

Interpretation:

Give reason for the lower boiling point of CO2 than Na2CO3 on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

(b)

Interpretation Introduction

Interpretation:

Give reason for the higher boiling point of N2H4 than

C2H6 on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

(c)

Interpretation Introduction

Interpretation:

Give reason for the lower boiling point of formic acid than benzoic acid, on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

(d)

Interpretation Introduction

Interpretation:

Give reason for the higher boiling point of CO than N2 on the basis of structural units.

Concept Introduction:

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

Answer 6

Chapter 9, Problem 32QAP

(a)

Interpretation Introduction

Interpretation:

Give reason for the lower boiling point of CO2 than Na2CO3 on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

Answer 7

Chapter 9, Problem 32QAP

(a)

Interpretation Introduction

Interpretation:

Give reason for the lower boiling point of CO2 than Na2CO3 on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

Answer 8

(b)

Interpretation Introduction

Interpretation:

Give reason for the higher boiling point of N2H4 than

C2H6 on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

Answer 9

(b)

Interpretation Introduction

Interpretation:

Give reason for the higher boiling point of N2H4 than

C2H6 on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

Answer 10

(c)

Interpretation Introduction

Interpretation:

Give reason for the lower boiling point of formic acid than benzoic acid, on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

Answer 11

(c)

Interpretation Introduction

Interpretation:

Give reason for the lower boiling point of formic acid than benzoic acid, on the basis of structural units.

Concept Introduction :

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

Answer 12

(d)

Interpretation Introduction

Interpretation:

Give reason for the higher boiling point of CO than N2 on the basis of structural units.

Concept Introduction:

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

Answer 13

(d)

Interpretation Introduction

Interpretation:

Give reason for the higher boiling point of CO than N2 on the basis of structural units.

Concept Introduction:

Boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved. The stronger the intermolecular forces, the higher will be the boiling and melting point of the substance. This is so because more energy is required to overcome strong bonds, whereas less energy is required to overcome weak bonds.

Answer 14

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Answer 17

Ch. 9 - Prob. 1QAP Ch. 9 - Prob. 2QAP Ch. 9 - The vapor pressure of I2(s) at 30C is 0.466 mm Hg....Ch. 9 - Prob. 4QAP Ch. 9 - Trichloroethane, C2H3Cl3 is used as a degreaser...Ch. 9 - p-Dichlorobenzene, C6H4Cl2, can be one of the...Ch. 9 - Prob. 7QAP Ch. 9 - Dichloromethane, CH2Cl2,is widely used as a...Ch. 9 - Prob. 9QAP Ch. 9 - Prob. 10QAP

Solution Summary: The author explains that boiling and melting points of molecular substances depend upon the strength of the intermolecular forces involved.

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