A solvent passes through a chromatography column in 3.87 min, but the solute requires 7.60 min. What is the retention factor, k? k = What fraction of the time does the solute spend in the mobile phase in the column? tfraction in mobile phase = The volume of the stationary phase is 0.133 times the volume of the mobile phase in the column (Vs = 0.133V). What is the distribution constant, Kp, for this system? Kp =

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
icon
Related questions
Question
**Chromatography Analysis: Understanding Retention Factor, Mobile Phase Fraction, and Distribution Constant**

In this exercise, you will learn to calculate key parameters used in chromatography analysis: the retention factor, time fraction in the mobile phase, and distribution constant. These are essential for understanding the interactions within a chromatography column.

### Problem Statement
A solvent passes through a chromatography column in 3.87 minutes, but the solute requires 7.60 minutes.

#### 1. What is the retention factor, \( k \)?

\[ 
k = \text{(retention time of solute)} - \text{(retention time of solvent)}
\]

Enter your calculated value for \( k \) here: \_\_\_\_\_\_\_\_\_\_

#### 2. What fraction of the time does the solute spend in the mobile phase in the column?

\[ 
t_{\text{fraction in mobile phase}} = \frac{\text{retention time of solvent}}{\text{retention time of solute}}
\]

Enter the time fraction here: \_\_\_\_\_\_\_\_\_\_

#### 3. The volume of the stationary phase is 0.133 times the volume of the mobile phase in the column (\( V_S = 0.133V_M \)). What is the distribution constant, \( K_D \), for this system?

\[ 
K_D = \frac{k}{V_S/V_M}
\]

Enter the distribution constant here: \_\_\_\_\_\_\_\_\_\_

By determining these values, you will gain valuable insight into the dynamics and efficiency of separation within the chromatography system.
Transcribed Image Text:**Chromatography Analysis: Understanding Retention Factor, Mobile Phase Fraction, and Distribution Constant** In this exercise, you will learn to calculate key parameters used in chromatography analysis: the retention factor, time fraction in the mobile phase, and distribution constant. These are essential for understanding the interactions within a chromatography column. ### Problem Statement A solvent passes through a chromatography column in 3.87 minutes, but the solute requires 7.60 minutes. #### 1. What is the retention factor, \( k \)? \[ k = \text{(retention time of solute)} - \text{(retention time of solvent)} \] Enter your calculated value for \( k \) here: \_\_\_\_\_\_\_\_\_\_ #### 2. What fraction of the time does the solute spend in the mobile phase in the column? \[ t_{\text{fraction in mobile phase}} = \frac{\text{retention time of solvent}}{\text{retention time of solute}} \] Enter the time fraction here: \_\_\_\_\_\_\_\_\_\_ #### 3. The volume of the stationary phase is 0.133 times the volume of the mobile phase in the column (\( V_S = 0.133V_M \)). What is the distribution constant, \( K_D \), for this system? \[ K_D = \frac{k}{V_S/V_M} \] Enter the distribution constant here: \_\_\_\_\_\_\_\_\_\_ By determining these values, you will gain valuable insight into the dynamics and efficiency of separation within the chromatography system.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Analytical Separations
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY