(a) Interpretation: The definition of retention volume is to be stated. Concept introduction: Retention volume is a quantity that corresponds to the product of retention time and volumetric flow rate of the solvent. The retention volume is proportional to the retention time. The flow rate of the solvent is the rate which is necessary for the operation to take place.

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Answer 1

Question

Chapter 27, Problem 27.4QAP

Interpretation Introduction

(a)

Interpretation:

The definition of retention volume is to be stated.

Concept introduction:

Retention volume is a quantity that corresponds to the product of retention time and volumetric flow rate of the solvent. The retention volume is proportional to the retention time. The flow rate of the solvent is the rate which is necessary for the operation to take place.

Interpretation Introduction

(b)

Interpretation:

The definition of corrected retention volume is to be stated.

Concept introduction:

The volume at the mean column pressure is known as the corrected retention volume. This volume is the product of retention volume and pressure corrected factor. Corrected retention volume is dependent upon the volumes of sample, detector and column.

Interpretation Introduction

(c)

Interpretation:

The definition of specific retention volume is to be stated.

Concept introduction:

The ratio of column temperature in Kelvin to the density of the liquid that is used in the stationary phase is called specific retention volume. It is influenced by the density of the liquid used for making the stationary phase and distribution constant of the solute.

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In molecular exclusion (size exclusion) chromatography, the molecules have the longest retention times. a) the larger molecules b) the smaller molecules

(a) An analyst has conducted a separation of a mixture of substance X and Y using liquid chromatography technique. The column used is 30-cm long and the flow rate was 0.65 mL/min. The chromatogram obtained is shown in Figure Q1.1. i) Determine the adjusted retention times for substance x and y. ii) Calculate the retention factors for substance x and y. iii) Calculate the resolution of the two peaks. Then, describe the quality of separation between the two adjacent peaks. iv) Calculate the plate height value of the column.

2-pentanone has a retention index of 987 on a poly(ethylene glycol) column (also called Carbowax). (a) Between which two straight-chain hydrocarbons is 2-pentanone eluted? (b) An unretained solute is eluted from a certain column in 1.80 min. Decane (C10H22) is eluted in 15.63 min and undecane (C11H24) is eluted in 17.22 min. What is the retention time of a compound whose retention index is 1 050?

Answer 2

Question

Chapter 27, Problem 27.4QAP

Interpretation Introduction

(a)

Interpretation:

The definition of retention volume is to be stated.

Concept introduction:

Retention volume is a quantity that corresponds to the product of retention time and volumetric flow rate of the solvent. The retention volume is proportional to the retention time. The flow rate of the solvent is the rate which is necessary for the operation to take place.

Interpretation Introduction

(b)

Interpretation:

The definition of corrected retention volume is to be stated.

Concept introduction:

The volume at the mean column pressure is known as the corrected retention volume. This volume is the product of retention volume and pressure corrected factor. Corrected retention volume is dependent upon the volumes of sample, detector and column.

Interpretation Introduction

(c)

Interpretation:

The definition of specific retention volume is to be stated.

Concept introduction:

The ratio of column temperature in Kelvin to the density of the liquid that is used in the stationary phase is called specific retention volume. It is influenced by the density of the liquid used for making the stationary phase and distribution constant of the solute.

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Answer 3

Question

Chapter 27, Problem 27.4QAP

Interpretation Introduction

(a)

Interpretation:

The definition of retention volume is to be stated.

Concept introduction:

Retention volume is a quantity that corresponds to the product of retention time and volumetric flow rate of the solvent. The retention volume is proportional to the retention time. The flow rate of the solvent is the rate which is necessary for the operation to take place.

Interpretation Introduction

(b)

Interpretation:

The definition of corrected retention volume is to be stated.

Concept introduction:

The volume at the mean column pressure is known as the corrected retention volume. This volume is the product of retention volume and pressure corrected factor. Corrected retention volume is dependent upon the volumes of sample, detector and column.

Interpretation Introduction

(c)

Interpretation:

The definition of specific retention volume is to be stated.

Concept introduction:

The ratio of column temperature in Kelvin to the density of the liquid that is used in the stationary phase is called specific retention volume. It is influenced by the density of the liquid used for making the stationary phase and distribution constant of the solute.

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Answer 4

Question

Chapter 27, Problem 27.4QAP

Interpretation Introduction

(a)

Interpretation:

The definition of retention volume is to be stated.

Concept introduction:

Retention volume is a quantity that corresponds to the product of retention time and volumetric flow rate of the solvent. The retention volume is proportional to the retention time. The flow rate of the solvent is the rate which is necessary for the operation to take place.

Interpretation Introduction

(b)

Interpretation:

The definition of corrected retention volume is to be stated.

Concept introduction:

The volume at the mean column pressure is known as the corrected retention volume. This volume is the product of retention volume and pressure corrected factor. Corrected retention volume is dependent upon the volumes of sample, detector and column.

Interpretation Introduction

(c)

Interpretation:

The definition of specific retention volume is to be stated.

Concept introduction:

The ratio of column temperature in Kelvin to the density of the liquid that is used in the stationary phase is called specific retention volume. It is influenced by the density of the liquid used for making the stationary phase and distribution constant of the solute.

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Answer 5

Chapter 27, Problem 27.4QAP

Interpretation Introduction

(a)

Interpretation:

The definition of retention volume is to be stated.

Concept introduction:

Retention volume is a quantity that corresponds to the product of retention time and volumetric flow rate of the solvent. The retention volume is proportional to the retention time. The flow rate of the solvent is the rate which is necessary for the operation to take place.

Interpretation Introduction

(b)

Interpretation:

The definition of corrected retention volume is to be stated.

Concept introduction:

The volume at the mean column pressure is known as the corrected retention volume. This volume is the product of retention volume and pressure corrected factor. Corrected retention volume is dependent upon the volumes of sample, detector and column.

Interpretation Introduction

(c)

Interpretation:

The definition of specific retention volume is to be stated.

Concept introduction:

The ratio of column temperature in Kelvin to the density of the liquid that is used in the stationary phase is called specific retention volume. It is influenced by the density of the liquid used for making the stationary phase and distribution constant of the solute.

Answer 6

Chapter 27, Problem 27.4QAP

Interpretation Introduction

(a)

Interpretation:

The definition of retention volume is to be stated.

Concept introduction:

Retention volume is a quantity that corresponds to the product of retention time and volumetric flow rate of the solvent. The retention volume is proportional to the retention time. The flow rate of the solvent is the rate which is necessary for the operation to take place.

Answer 7

Chapter 27, Problem 27.4QAP

Interpretation Introduction

(a)

Interpretation:

The definition of retention volume is to be stated.

Concept introduction:

Retention volume is a quantity that corresponds to the product of retention time and volumetric flow rate of the solvent. The retention volume is proportional to the retention time. The flow rate of the solvent is the rate which is necessary for the operation to take place.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The definition of corrected retention volume is to be stated.

Concept introduction:

The volume at the mean column pressure is known as the corrected retention volume. This volume is the product of retention volume and pressure corrected factor. Corrected retention volume is dependent upon the volumes of sample, detector and column.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The definition of corrected retention volume is to be stated.

Concept introduction:

The volume at the mean column pressure is known as the corrected retention volume. This volume is the product of retention volume and pressure corrected factor. Corrected retention volume is dependent upon the volumes of sample, detector and column.

Answer 10

Interpretation Introduction

(c)

Interpretation:

The definition of specific retention volume is to be stated.

Concept introduction:

The ratio of column temperature in Kelvin to the density of the liquid that is used in the stationary phase is called specific retention volume. It is influenced by the density of the liquid used for making the stationary phase and distribution constant of the solute.

Answer 11

Interpretation Introduction

(c)

Interpretation:

The definition of specific retention volume is to be stated.

Concept introduction:

The ratio of column temperature in Kelvin to the density of the liquid that is used in the stationary phase is called specific retention volume. It is influenced by the density of the liquid used for making the stationary phase and distribution constant of the solute.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 27 - Prob. 27.1QAP Ch. 27 - Prob. 27.2QAP Ch. 27 - Prob. 27.3QAP Ch. 27 - Prob. 27.4QAP Ch. 27 - Prob. 27.5QAP Ch. 27 - Prob. 27.6QAP Ch. 27 - Prob. 27.7QAP Ch. 27 - Prob. 27.8QAP Ch. 27 - Prob. 27.9QAP Ch. 27 - What are hyphenated GC methods? Briefly describe...

Solution Summary: The author explains retention volume, which corresponds to the product of retention time and volumetric flow rate of the solvent.

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Chapter 27 Solutions