February 19, 2017

Homework Help: science(chemistry)

Posted by ~christina~ on Friday, April 17, 2009 at 5:03pm.

I have a question about solvent evaporation. If I had an organic layer and an aqueous layer in an unknown mixture of liquids and wanted to obtain the solid of a compound(s) dissolved in the layers, is it reasonable to assume that I can run the compound in the IR spectrometer (with KBr pellet) with no problems from interfering solvent residue spectra?
If I will have solvent spectrum interfering with the compound spectrum, how would I solve this problem?

I was planning to determine how many compounds are in the unknown mixture by running a TLC plate, but if I don't know the solvents that the unknown is dissolved in specifically, does it matter, since the solvent that the compound is dissolved in evaporates off after you apply it to the plate anyway? or does it matter during the TLC plate development?

I really need help on this,

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