Embedded Files
2_phenoxide salt_acidicEXT_brinewash_cc.mp4- Add 10 mL of brine/NaCl (aq)
Wash the combined organic extracts
mix, vent, repeat
Allow the layers to separate – remove the AQ layer
2_phenoxide salt_acidicEXT1_dry_cc.mp42. Dry the ORG layer
2. Dry the ORG layer
Remove the visible water from the ORG layer by pipet
Add a micro-spatula-tips worth of anhydrous Na2SO4
Let suspension sit ~five minutes with occasional swirling
Discuss:
What does this brine stuff do anyway? I thought this was Ochem not a cooking class!
2_phenoxide salt_acidicEXT1_filter:conc_cc.mp43. Filter, concentrate and obtain mass
3. Filter, concentrate and obtain mass
Filter into a pre-weighed 50-mL round-bottom flask
Concentrate using a rota-vap – the concentrated extracts may either be a liquid or solid, depending on purity
*Product loss: subtract 1 mg from ACE
Results:
Calculate the mass recoveries for acetaminophen (ACE) by subtracting the total mass lost during the remote lab from the theoretical mass calculated at the beginning of the experiment
Calculate the actual percent recovery:
(mass of acetaminophen recovered / mass of Excedrin) *100
obtain the mass of the product by difference
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