Chapter 23: Q26P (page 630)
The retention volume of a solute is 76.2mL for a column with and . Calculate the retention factor and the partition coefficient for this solute.
Short Answer
- Retention factor = k = 3.59
- Partition coefficient= K = 4.69
Chapter 23: Q26P (page 630)
The retention volume of a solute is 76.2mL for a column with and . Calculate the retention factor and the partition coefficient for this solute.
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.
(a) How many theoretical plates are present?
(b) Find the plate height if the column is 10cm long.
When performing liquid-liquid extraction, it is common practice to shake the separatory funnel to disperse one phase into the other.
(a) Does shaking the separatory funnel change the partition coefficient?
(b) Explain the purpose of shaking the funnel.
Why is longitudinal diffusion a more serious problem in gas chromatography than in liquid chromatography?
23-41. Describe how nonlinear partition isotherms lead to non-Gaussian band shapes. Draw the chromatographic peak shapes produced by an overloaded gas chromatography column and an overloaded liquid chromatography column.
23-38. What is the optimal flow rate in Figure 23-17 for best separation of solutes?
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