Principles of Instrumental Analysis
7th Edition
ISBN: 9781305577213
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cengage Learning
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Question
Chapter 27, Problem 27.19QAP
Interpretation Introduction
Interpretation:
The definition for the retention index and its method of determination is to be stated.
Concept introduction:
The retention index is used to determine the solutes from the chromatograms. It is derived from the mixture of solutes chromatogram. The solute must have two
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Chapter 27 Solutions
Principles of Instrumental Analysis
Ch. 27 - Prob. 27.1QAPCh. 27 - Prob. 27.2QAPCh. 27 - Prob. 27.3QAPCh. 27 - Prob. 27.4QAPCh. 27 - Prob. 27.5QAPCh. 27 - Prob. 27.6QAPCh. 27 - Prob. 27.7QAPCh. 27 - Prob. 27.8QAPCh. 27 - Prob. 27.9QAPCh. 27 - What are hyphenated GC methods? Briefly describe...
Ch. 27 - Prob. 27.11QAPCh. 27 - Prob. 27.12QAPCh. 27 - Prob. 27.13QAPCh. 27 - Prob. 27.14QAPCh. 27 - Prob. 27.15QAPCh. 27 - Prob. 27.16QAPCh. 27 - Prob. 27.17QAPCh. 27 - Prob. 27.18QAPCh. 27 - Prob. 27.19QAPCh. 27 - The same polar compound is gas chromatographed on...Ch. 27 - Prob. 27.21QAPCh. 27 - Prob. 27.22QAPCh. 27 - Prob. 27.23QAPCh. 27 - Prob. 27.24QAPCh. 27 - Prob. 27.25QAPCh. 27 - Prob. 27.26QAPCh. 27 - Prob. 27.27QAPCh. 27 - Prob. 27.28QAPCh. 27 - Why is GSC not used nearly as extensively as GLC?Ch. 27 - Prob. 27.30QAP
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- 3) What is the approximate retention time of benzoate?arrow_forwardAn unretained solute is eluted from a GC column in 1.80 min. Decane (C10H22) is eluted in 15.63 min and undecan (C11H24) is eluted in 17.22 min. What is the retention time (report to 2 decimal places, in minutes) of a compound whose retention index is 1050?arrow_forwardAn unknown sample of nail polish remover contains a mixture of acetone and ethyl acetate. If the mixture is subjected to gas chromatography, which compound would have a longer retention time? Acetone Ethyl acetate Acetone and ethyl acetate would have the same retention time Cannot be determinedarrow_forward
- In analytical chemistry, when and why do we do representative sampling?arrow_forwardWhat would happen to the retention time of a compound if the following changes were made? 1.) Decrease the flow rate of the carrier gas 2.) Increase the temperature of the column 3.) Increase the length of the columnarrow_forwardwhat chromatography seperation how is tlc part of itarrow_forward
- You are trying to separate a sample with 2 components: X and Y with GC. X has a lower boiling point than Y. Which one has a higher retention time? What is the most common way to increase retention of analytes in gas chromatography?arrow_forwardAn example of planar chromatography is: Column chromatography HPLC GLC TLCarrow_forwardIdentify The most commonly used stationary phase in paper chromatography.arrow_forward
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