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During melting point determination, what does melting point range means? How will you know if the sample is pure or not?
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- Describe the errors which may cause an observed melting point range of a PURE sample to be: higher than the correct melting point broad in rangeWhen you prepare your sample to run through the column chromatography , what is the first proper action you should do if you notice that your sample did not fully dissolve? A)Add a small amount of the sample B)Boil the sample mixture C)Use the rotovap D)Use a different solventWrite the dispersion medium and dispersed phase in milk.
- To which sample solution the spike will be add? the distillate>130C the mass standard the distilled <130CAll three of these are gas chromatography runs from my sample. I'm trying to figure out what it means when my retention times are as the following. Does this just mean that the machine can't get an accurate read because my sample is un pure?In paper chromatography, a rectangular piece of filter paper serves as the mobile phase stationary phase eluent solute sample spots
- Chromatography is a separation technique. What is the physical or chemical basis for separation of compounds during thin layer chromatography?Read the detailed procedure of an experiment in your screen. Evaluate each step in the procedure whether it belongs to HOMOGENIZATION, EXTRACTION, PURIFICATION/CONCENTRATION, DATA TREATMENT, or INSTRUMENTAL ANALYSIS step.why is it important to apply the percent volume and percent retrieval in separation of mixtures experiment?
- If insoluble impurities eg. dust, tissues, filter paper etc were mixed with the sample how will these affect the measured melting pointWhen isolating a solid compound after recrystallization, which is the appropriate technique to use, vacuum filtration or gravity filtration?How is "Characterization and spectroscopic techniques for analyzing" used in a melting point experiment?