biomechem
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NMR and detecting CDCl3 insoluble, inorganic mixtures (Mandelin etc.)
Let's say sb has only a few ml of unknown color reagent.
Is 1H NMR method suitable for to discriminate composition of the mixture?
Neither H2SO4 (major ingredient of most color reagents) nor inorganic salts are really soluble in CDCl3, or theirs solubility is enough to determine
the composition? Or maybe the solubility has nothing to do with that, and spectrometer can analyse even two layers?
If NMR cannot do that then using an infrared spectroscopy is the solution?
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DraconicAcid
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Mandelin is a mixture of ammonium metavanadate and sulphuric acid. 1H NMR will be completely useless in trying to analyze this, even if you switch to
a solvent that would dissolve it (such as D2O).
You can dilute a sample and determine the sulphuric acid by acid-base titration and the vanadium concentration by redox titration.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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biomechem
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Mandelin was just an example of what kind of reagent it could be.
How to determine what kind of substance, in this case color reagent, is in the vial by use of an instrumental method?
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