Please enable JavaScript.
Coggle requires JavaScript to display documents.
Recrystallization of acetanilide - Coggle Diagram
Recrystallization of acetanilide
Set up reflux apparatus
connect rubber hoses to condenser before clamping
Start slow stream of water
Check for leaks
weigh 1.5 g sample of impure acetanilide
in 100 mL beaker + place it in 100 mL RBF (using powder funnel)
add 35 mL of hot water using the SAME 100 mL beaker and 2 boiling stones
connect flask to the condenser and check all connections and clamps
set up mantle. RBF lies snugly against the sides
connect heating mantle to variac
set to 7
heat until no more solid appears + solution has reached boil
might have oily residue floating
remove heating mantle + allow flask to cool
1 more item...
Set up hot gravity filtration
hot 125 mL Erlenmeyer flask and hot liquid funnel from the over
remove condenser and filter hot acetanilide solution without delay
after filtration, cork flask and place it aside for 5-10 minutes
1 more item...
set up vacuum filtration apparatus. Clamp filter flask immediately when you take it out of the cupboard
when crystallization is complete, collect crystals by vacuum filtration
wet filter paper, rinse crystals with 3-5 mL of colf ice water
1 more item...
obtain a collecting beaker from drawer, take its mass
report mass on the seatting chart and on my report sheet
1 more item...