Studied by 9 people
how was HBR provided
prepared in flask (in situ)
NaBr +
purpose of adding water to RBV after reflux
to prevent sudden crystalization
effect of no pet ether during extractions
inversion of layers could occur
organic layer at bottom not distinct
purpose of cooling to room temp before adding pet ether
pet ether has low boiling components => net to cool to prevent evaporation
purpose of aq sodium bicarbonate as extraction
to neutralize residual acid
purpose of adding anhydrous magnesium sulfate
drying agent => forms clumps/crystals
purpose of hot waste bath after anhydrous magnesium sulfate
to obtain heat liquid product
used for percent yield and IR analysis
molarity
moles/volume (L)
TLC "less polar" spot
travels farther since it does not interact with stationary phase
retention factor
distance traveled by spot/distance traveled by solvent from
ALWAYS <1
TLC mobile phase
non polar, liquid
TLC stationary phase
polar, liquid or solid
constant mass can be used to calculate
actual and percent yield
solid phase
25°
liquid phase
< 25°
soluble in water
polar
(?) x^n in water
slightly polar
insoluble in water
non polar
SN1 only
carbocation intermediates
SN2 only
transition state
both SN1 and SN2
nucleophilic substitutes
gas chromatography used to determine
percent composition
sample purity
common drying agent to remove water
sodium sulfate
t-butyl chloride made by SN1 or SN2 reaction
SN1
Note
Flashcard