How a polar solvent works in the separation of polar dyes?

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Discussion Overview

The discussion revolves around the role of polar solvents in the separation of polar dyes, particularly in the context of chromatography and its applications in forensic science. Participants explore the mechanisms of separation and the practical challenges involved.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant asks for clarification on how polar solvents separate polar dyes and suggests that chromatography might help identify the type of pen used in a crime.
  • Another participant mentions that chromatography could be used to analyze contaminants in samples, such as fibers, and implies that the discussion should consider chromatography in a broader sense beyond just dye separation.
  • A participant expresses confusion about the mechanism of polar solvent separation of polar dyes, indicating a lack of understanding of the topic.
  • One participant explains that the separation depends on the interactions between the adsorbent and the solute, noting that different solutes have varying interaction potentials, which complicates the separation process. They suggest that while polar solvents can facilitate faster movement of polar solutes, practical challenges exist, especially with nonpolar solutes.

Areas of Agreement / Disagreement

Participants express varying levels of understanding regarding the role of polar solvents in dye separation, with some confusion evident. There is no consensus on the mechanisms or practical applications discussed, indicating multiple competing views and unresolved questions.

Contextual Notes

Limitations include a lack of clarity on the specific physical properties of the dyes involved and the critical amounts of polar solvent needed for effective separation. The discussion also reflects uncertainty about the practical execution of chromatography in forensic applications.

Who May Find This Useful

This discussion may be of interest to students studying chemistry, particularly those focusing on chromatography, as well as professionals in forensic science looking for insights into analytical techniques.

MercuryRising
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Explain how a polar solvent works in the separation of polar dyes?
How might chromatography be useful in forensic science? i only thing i can think of is figuring out what pen the criminal used...
i really need help on this... :rolleyes:
 
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You could look at contaminant in the sample such as fibers. From the question, it probably chromatography in general rather than just seperating dyes.

As far as the role of polar solvant you should consider the physical properties of the dyes but this link might give you some insight.
http://www.google.ca/search?q=cache:HjOg5kAvEAkJ:www.chem.umn.edu/services/lecturedemo/info/column_chromatography.html+Chromatography+separation+polar+dyes+polar+solvent&hl=en
 
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sorry...i did not get that...still clueless on how a polar solvent separates polar dyes... :cry:
 
It lies on the interactions between adsorbent and solute; it is retarded by the adsorbent and since every solute has principally different interaction potential, you can theoretically separate the ingredients in a solute if you use a critical amount of needed polar solvent. However, in practice, it is not that easy. The polar the solvent is, the faster the solute go (if it is polar, too). If it is nonpolar, it starts to decelerate on the plate according to previous nonpolar runs. It may work, however, if your solute contains impurities which can be eluted under these circumstances.
 

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