Answered: 1. What does adsorb mean? 2. What is…

1. What does adsorb mean? 2. What is chromatography used for? 3.Why must a pencil rather than a pen be used to mark the TLC plate?.

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter27: Gas Chromatography

Section: Chapter Questions

Problem 27.10QAP: What are hyphenated GC methods? Briefly describe two hyphenated methods.

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CHROMATOGRAPHY HW
1. What does adsorb mean?
2. What is chromatography used for?
3. Why must a pencil rather than a pen be used to mark the TLC
plate?

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What are hyphenated GC methods? Briefly describe two hyphenated methods.
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PART1: Put True (T) or False (F) for the following sentences: 1. chromatography" derived from two Greek words "Chroma" meaning color and "graphein" meaning to write. The stationary phase may be a solid, or a liquid supported on a solid or gel. 3. The mobile phase may be 2. Solid. 4. Silica gel is the most common stationary phase in adsorption chromatography. 5. Liquid Chromatography abbreviated as (GC ). 6. In Thin Layer Chromatography, the mobile phase is gas. 7. a = KB/KA, where Kg is the distribution constant. 8. k'B and k'A are the retention factors. 9. Rf, is the distance traveled by the compound ONLY. 10. Chromatography is a physical method of separation.
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