Task 1 M1
Describe the scientific principles behind each of the three procedure above.
Vacuum filtration is a procedure when a sold needs separating from a solvent to react the mixture. Then the mixture of a solid is measured through the filtration paper in a Buhner funnel. The liquid is drained through the funnel into the flask.
Equipment
• Filter paper
• Buhner funnel
• Tubing
• Clean solvent
• Disposable dropper
Method
1. When carrying out this scientific technique you first need filter paper, tubing, clean solvent, and disposable dropper.
2. Clamp the flask firmly to the ring stand and add the Buhner funnel with a rubber funnel stopper. 3. Get some filter paper and make sure it fits in the funnel.
4. Place the filter paper in the funnel.
5. Join the side arm flask to source of vacuum. While dealing with this experiment you should always use thick walled tubing, the pressure will collapse with the Tygon tubing.
6. Wet the filter paper with a tiny amount of solvent to be used in the filtration. This technique causes the paper to stick to towards the plate and keeps materials passing under the paper during filtration. Before doing this
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The solution of liquid and sold is decanted through the filter paper in the funnel. The solid is trapped by the filter and the fluid is drawn through the Buchner funnel into the glass flask by the vacuum. While starting your scientific experiment always remember a vacuum trap and keep it clean so it does not get contaminated. The technique is faster than gravity filtration. Vacuum filtration generally involves the use of vacuum filter flask, water pump, filter trap and sintered glass crucible. It is commonly used in organic chemistry laboratories suction filtration or vacuum filtration. The solution can be supersaturated, unsaturated or saturated. Vacuum filtrations is used to assemble recrystallized