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23 Cards in this Set
- Front
- Back
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4 uses for chromatography
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trace a reaction
purify cmpd cmpr to known check for purity |
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2 ways purify a liquid
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chromotography
distillation |
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4 ways to purify a solid
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chromotography
sublimation recrystalization precipitation |
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recrystalization 4
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dissolve in minimal hot solvent
hot filter cool slowly covered vacuum filter |
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Solvent peaks
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TMS - 0 0
H20 in CDCl3 - 1.5 DMSO - 2.5 39 h20 in DMSO - 3.35 CDCl3 - 7.24 77 |
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CNMR Peaks
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0-100 sp3
60-80 sp3-O 100-150 sp2 150-180 acid ester amide acid halide 180+ aldehyde ketone |
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HNMR Peaks
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1 alkyl
2 alpha to carbonyl or allylic 3-4.5 CH-X 4-6 C=C-H (vinyl) 7-8.5 Aromatic 8.5-9.5 Aldehyde 10 carboxylic acid |
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IR
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1600-1800 Carbonyl
2200-3500 COOH funnel 2900 C-H sp3 3100 C=C-H sp2 3300 C=_C-H sp 3300-3600 OH NH |
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TlC
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silica polar, meth chlor non polar
so the higher the peak the less polar the sub. |
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What can affect accuracy of MP (4)
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heat to quick
impurities calibration mistake in reference |
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Impurities do what to MP(2)
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shift range
widen range |
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sodium barcarb syn
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baking soda
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ether
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diethyl ether, ethyl ether
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bleach
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Sodium Hypochlorite
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acetone
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dimethyl ketone, propanone
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acetic acid
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ethanoic acid
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cinnamaldehyde
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cinnamic acid
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isopentyl
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isoamyl
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product burning, charing
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pyrolosis
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4 ways to control the rate of reaction
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Cool
Slowly add Stir add in proper order |
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Hazards of Acetyl Chloride (4)
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1 Water reactive
2 Corrosive 3 Fume hazard 4 Flammable |
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Aluminum Chloride hazard 2
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water reactive
corrosive |
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pet ether
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4-7 C-C
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