(a) Interpretation: Using figure estimate the density of methane gas at 200 atm. Concept introduction: When 1 mol of methane is burned in the presence of oxygen, 1 mol of carbon dioxide and 2 mol of water is produced.

Question

(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

Answer 1

Question

Chapter 5, Problem 65QAP

Interpretation Introduction

(a)

Interpretation:

Using figure estimate the density of methane gas at 200 atm.

Concept introduction:

When 1 mol of methane is burned in the presence of oxygen, 1 mol of carbon dioxide and 2 mol of water is produced.

Interpretation Introduction

(b)

Interpretation:

Using figure compare the value obtained in (a) with that calculated from the ideal gas law.

Concept introduction:

The ideal gas law, additionally known as the overall gas equation, is that the equation of state of a hypothetical gas. It’s a good approximation of the behavior several gases underneath many conditions, though it’s many limitations.

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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 5, Problem 65QAP

Interpretation Introduction

(a)

Interpretation:

Using figure estimate the density of methane gas at 200 atm.

Concept introduction:

When 1 mol of methane is burned in the presence of oxygen, 1 mol of carbon dioxide and 2 mol of water is produced.

Interpretation Introduction

(b)

Interpretation:

Using figure compare the value obtained in (a) with that calculated from the ideal gas law.

Concept introduction:

The ideal gas law, additionally known as the overall gas equation, is that the equation of state of a hypothetical gas. It’s a good approximation of the behavior several gases underneath many conditions, though it’s many limitations.

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Answer 3

Question

Chapter 5, Problem 65QAP

Interpretation Introduction

(a)

Interpretation:

Using figure estimate the density of methane gas at 200 atm.

Concept introduction:

When 1 mol of methane is burned in the presence of oxygen, 1 mol of carbon dioxide and 2 mol of water is produced.

Interpretation Introduction

(b)

Interpretation:

Using figure compare the value obtained in (a) with that calculated from the ideal gas law.

Concept introduction:

The ideal gas law, additionally known as the overall gas equation, is that the equation of state of a hypothetical gas. It’s a good approximation of the behavior several gases underneath many conditions, though it’s many limitations.

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Answer 4

Question

Chapter 5, Problem 65QAP

Interpretation Introduction

(a)

Interpretation:

Using figure estimate the density of methane gas at 200 atm.

Concept introduction:

When 1 mol of methane is burned in the presence of oxygen, 1 mol of carbon dioxide and 2 mol of water is produced.

Interpretation Introduction

(b)

Interpretation:

Using figure compare the value obtained in (a) with that calculated from the ideal gas law.

Concept introduction:

The ideal gas law, additionally known as the overall gas equation, is that the equation of state of a hypothetical gas. It’s a good approximation of the behavior several gases underneath many conditions, though it’s many limitations.

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Answer 5

Chapter 5, Problem 65QAP

Interpretation Introduction

(a)

Interpretation:

Using figure estimate the density of methane gas at 200 atm.

Concept introduction:

When 1 mol of methane is burned in the presence of oxygen, 1 mol of carbon dioxide and 2 mol of water is produced.

Interpretation Introduction

(b)

Interpretation:

Using figure compare the value obtained in (a) with that calculated from the ideal gas law.

Concept introduction:

The ideal gas law, additionally known as the overall gas equation, is that the equation of state of a hypothetical gas. It’s a good approximation of the behavior several gases underneath many conditions, though it’s many limitations.

Answer 6

Chapter 5, Problem 65QAP

Interpretation Introduction

(a)

Interpretation:

Using figure estimate the density of methane gas at 200 atm.

Concept introduction:

When 1 mol of methane is burned in the presence of oxygen, 1 mol of carbon dioxide and 2 mol of water is produced.

Answer 7

Chapter 5, Problem 65QAP

Interpretation Introduction

(a)

Interpretation:

Using figure estimate the density of methane gas at 200 atm.

Concept introduction:

When 1 mol of methane is burned in the presence of oxygen, 1 mol of carbon dioxide and 2 mol of water is produced.

Answer 8

Interpretation Introduction

(b)

Interpretation:

Using figure compare the value obtained in (a) with that calculated from the ideal gas law.

Concept introduction:

The ideal gas law, additionally known as the overall gas equation, is that the equation of state of a hypothetical gas. It’s a good approximation of the behavior several gases underneath many conditions, though it’s many limitations.

Answer 9

Interpretation Introduction

(b)

Interpretation:

Using figure compare the value obtained in (a) with that calculated from the ideal gas law.

Concept introduction:

The ideal gas law, additionally known as the overall gas equation, is that the equation of state of a hypothetical gas. It’s a good approximation of the behavior several gases underneath many conditions, though it’s many limitations.

Answer 10

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Answer 11

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Answer 21

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(a) Interpretation: Using figure estimate the density of methane gas at 200 atm. Concept introduction: When 1 mol of methane is burned in the presence of oxygen, 1 mol of carbon dioxide and 2 mol of water is produced.

Solution Summary: The author calculates the molar density of methane gas at 200 atm using the following formula.

(a)

Interpretation:

Using figure estimate the density of methane gas at 200 atm.

Concept introduction:

When 1 mol of methane is burned in the presence of oxygen, 1 mol of carbon dioxide and 2 mol of water is produced.

Chapter 5 Solutions