Chromatography Lab #31
Filtration: process of separating matter from a substance by causing the latter to pass through the pores of some filter substance (may be gravitational or vacuum)
Procedure:
Collect materials
Clamp the flask in the ring stand
Add Buckner funnel to the top of the flask
Place piece of filter paper (with pores small enough that only the liquid passes through) in the funnel so that lays flat in the funnel and covers the entire area
Connect side-arm flask to vacuum and vacuum to create a low pressure system
Wet paper with small amount of solvent
Turn on vacuum and pour mixture in flask
Wait until all of the solvent passes through
Rinse the impurities out with solvent
Disconnect Buckner funnel
Remove filter paper with tongs and collect the remaining substance on the filter paper.
Distillation- the process in which the boiling point of a mixture is used to vaporize part of the mixture and then transfer that vapor to another area where it can condensate.
Filter paper
Filtration Video at Leadville NFH
A Büchner funnel connected to a side-arm flask by...Procedure:
Collect materials
Pour mixture into a flask
Attach outlet tube to opening in flask
Attach a condenser to end of the tube
Heat flask to a temperature where a component f the mixture will vaporize (boiling point)
Allow time to vaporize
The vapor should then go through the tube to the condenser
Cool the vapor so that it condenses
Results in the separation of components of a mixture
Works Cited
"Distillation." Distillation. CU Boulder, 13 Aug. 2013. Web. 20 Sept. 2013. <http://orgchem.colorado.edu/Technique/Procedures/Distillation/Distillation.html>.
"Filtration." Filtration. Arizona Chemistry Education, n.d. Web. 20 Sept. 2013. <http://quiz2.chem.arizona.edu/vip/filtration/>.
"Filtration." Lenntech Water Treatment Solutions. Lenntech, 2009. Web. 18 Sept. 2013. <http://www.lenntech.com/chemistry/filtration.htm>.