Term
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Definition
1. theoretical planning
2. experimental setup and execution of procedure
3. separation and purification
4. product identification |
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Term
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Definition
| filtration, liquid/liquid extraction, column chromatography, distillation |
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Definition
| recrystallization, distillation, drying, etc |
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Term
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Definition
idicate purity; comparison to literature values of known compounds for structure determination.
boiling point is a range
X boone value by 1.03 to get literature value |
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Term
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Definition
| shows number of components present and % of each and possible structure determniation if pure sample is available |
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Definition
| shows number of components present and % of each and possible structure determniation if pure sample is available |
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Term
| nuclear magnetic resonance spectroscopy (NMR) |
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Definition
| determines the carbon-hydrogen framework of molecule |
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Term
| Infrared spectroscopy (IR) |
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Definition
| determines functional groups present in a compound |
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Term
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Definition
| gives molecular weight of compound |
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Definition
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Definition
| time it takes for component of mixture to pass through the column |
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Term
| never water to clean what in a IR? |
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Definition
| salt plates b/c they will dissolve |
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Term
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Definition
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Term
| simple distilation is most useful for what? |
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Definition
| purifying a liquid that contains either non-volatile impurites or small amounts of impurities w/ higher or lower bp |
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Definition
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Definition
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Definition
| separates liquids that boil above 150 degrees C from nonvolatile impurities and liquids that boil 25degrees C above the first |
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Term
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Definition
| separates liquids soluble i n each other that boil less than 25 degrees from each other |
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Term
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Definition
isolates tars, oils etc that are insoluble in h2o at all temps.
usually natural products are steamed distillated |
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Term
| liquid-liquid distillation |
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Definition
uses separatory funnel.
separate two immiscible liquidds from a mixture. |
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Term
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Definition
| removes solids from a liquid solution |
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Term
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Definition
| used to purify solid compounds |
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Term
| melting point determination |
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Definition
uses melting point apparatus.
pure substances have range of 1-2 degrees celsius |
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