Accepted
at 3:22 p.m. Feb, 10, 2024
by
Michael_B
Bulk Suggestion
Bulk ID:
Brian_BH/02.09.24-02:36AM
Author:
Brian_BH
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Rationale for change
Question requires understanding the basis of separation via gas chromatography, and using the understanding of boiling point and polarity to predict the order in which various example compounds would elute out.
Answering requires the understanding, and ability to predict, that higher boiling point examples would have longer retention time.
No changes in fields
Text
In {{c2::gas}} chromatography, the liquid sample is {{c3::vaporized}} before {{c3::separation}}. Molecules are separated based on their {{c1::polarity}} and {{c1::boiling point}}.
Extra
The stationary phase is a thin layer of material applied to the inside of the column.
Typically the polarity of the stationary phase matches that of the solute.
The mobile phase is an inert gas.
Photo credit: Offnfopt, Public domain, via Wikimedia Commons
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