The new volume of a container holding a gas is to be calculated when pressure is changed is to be calculated. Concept introduction: Boyle’s law states that the volume of a fixed amount of a gas is directly proportional to its pressure, at constant temperature and fixed amount of the gas. Charles’ law states that the volume of a fixed amount of a gas is directly proportional to its temperature, keeping the pressure of the gas constant. Combining Boyle’s law and Charles’ law gives the combined gas law which relates all the three properties of a gas – pressure, volume and temperature at two different conditions as: P 1 V 1 T 1 = P 2 V 2 T 2

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

Definition Definition Any of various laws that describe the ways in which volume, temperature, pressure, and other conditions correlate when matter is in a gaseous state. At a constant temperature, the pressure of a particular amount of gas is inversely proportional with its volume (Boyle's Law) In a closed system with constant pressure, the volume of an ideal gas is in direct relation with its temperature (Charles's Law) At a constant volume, the pressure of a gas is in direct relation to its temperature (Gay-Lussac's Law) If the volume of all gases are equal and under the a similar temperature and pressure, then they contain an equal number of molecules (Avogadro's Law) The state of a particular amount of gas can be determined by its pressure, volume and temperature (Ideal Gas law)

Chapter 4, Problem 6PE

Interpretation Introduction

Interpretation: The new volume of a container holding a gas is to be calculated when pressure is changed is to be calculated.

Concept introduction: Boyle’s law states that the volume of a fixed amount of a gas is directly proportional to its pressure, at constant temperature and fixed amount of the gas.

Charles’ law states that the volume of a fixed amount of a gas is directly proportional to its temperature, keeping the pressure of the gas constant.

Combining Boyle’s law and Charles’ law gives the combined gas law which relates all the three properties of a gas – pressure, volume and temperature at two different conditions as:

P1V1T1=P2V2T2

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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

Definition Definition Any of various laws that describe the ways in which volume, temperature, pressure, and other conditions correlate when matter is in a gaseous state. At a constant temperature, the pressure of a particular amount of gas is inversely proportional with its volume (Boyle's Law) In a closed system with constant pressure, the volume of an ideal gas is in direct relation with its temperature (Charles's Law) At a constant volume, the pressure of a gas is in direct relation to its temperature (Gay-Lussac's Law) If the volume of all gases are equal and under the a similar temperature and pressure, then they contain an equal number of molecules (Avogadro's Law) The state of a particular amount of gas can be determined by its pressure, volume and temperature (Ideal Gas law)

Chapter 4, Problem 6PE

Interpretation Introduction

Interpretation: The new volume of a container holding a gas is to be calculated when pressure is changed is to be calculated.

Concept introduction: Boyle’s law states that the volume of a fixed amount of a gas is directly proportional to its pressure, at constant temperature and fixed amount of the gas.

Charles’ law states that the volume of a fixed amount of a gas is directly proportional to its temperature, keeping the pressure of the gas constant.

Combining Boyle’s law and Charles’ law gives the combined gas law which relates all the three properties of a gas – pressure, volume and temperature at two different conditions as:

P1V1T1=P2V2T2

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Answer 3

Question

Definition Definition Any of various laws that describe the ways in which volume, temperature, pressure, and other conditions correlate when matter is in a gaseous state. At a constant temperature, the pressure of a particular amount of gas is inversely proportional with its volume (Boyle's Law) In a closed system with constant pressure, the volume of an ideal gas is in direct relation with its temperature (Charles's Law) At a constant volume, the pressure of a gas is in direct relation to its temperature (Gay-Lussac's Law) If the volume of all gases are equal and under the a similar temperature and pressure, then they contain an equal number of molecules (Avogadro's Law) The state of a particular amount of gas can be determined by its pressure, volume and temperature (Ideal Gas law)

Chapter 4, Problem 6PE

Interpretation Introduction

Interpretation: The new volume of a container holding a gas is to be calculated when pressure is changed is to be calculated.

Concept introduction: Boyle’s law states that the volume of a fixed amount of a gas is directly proportional to its pressure, at constant temperature and fixed amount of the gas.

Charles’ law states that the volume of a fixed amount of a gas is directly proportional to its temperature, keeping the pressure of the gas constant.

Combining Boyle’s law and Charles’ law gives the combined gas law which relates all the three properties of a gas – pressure, volume and temperature at two different conditions as:

P1V1T1=P2V2T2

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Answer 4

Question

Definition Definition Any of various laws that describe the ways in which volume, temperature, pressure, and other conditions correlate when matter is in a gaseous state. At a constant temperature, the pressure of a particular amount of gas is inversely proportional with its volume (Boyle's Law) In a closed system with constant pressure, the volume of an ideal gas is in direct relation with its temperature (Charles's Law) At a constant volume, the pressure of a gas is in direct relation to its temperature (Gay-Lussac's Law) If the volume of all gases are equal and under the a similar temperature and pressure, then they contain an equal number of molecules (Avogadro's Law) The state of a particular amount of gas can be determined by its pressure, volume and temperature (Ideal Gas law)

Chapter 4, Problem 6PE

Interpretation Introduction