Fractional Distillation Lab Report

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Pages: 2
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Karina Vega
Experiment 7A
Chem 221-B
Dr. Sammy Kozoura
Experiment 7A
Apparatus
1. If fractional distillation is done, stuff the air condenser evenly with around .8 to .9 grams of stainless steel cleaning fiber. The simplest method is to cut the pad.
2. With a wire with a bent end on one side, pull the fiber through the condenser. After using the wire, us a stir rod to fix the position of the fiber; do not stuff the fiber too tight one any one side.
3. Seal the glass part of the condenser between two caps with tubing.
4. For either part of the experiment, put a boiling stone in the round flask.
5. Put 8 milliliters of unknown to the same flask.
6. To heat it, use an Al block and hot plate.
Distillation of both Simple and Fractional
1. Let the cold H20 in the condenser circulate and set the temperature …show more content…
It is important to keep an eye on the temperature of the hot plate, so that drops of distillate go into the graduated cylinder at 1 drop of distillate for every 5 seconds.
4. Lower the heat on the hot plate to achieve 1 drop for every 5 seconds; it helps to raise the round flask to help it cool down faster. Start recording the temperature of the distillation as it correlates to the total volume of collected distillate.
5. Record the temperature at every .5 milliliter mark in the graduated cylinder.
6. When the temperature increases, it may be necessary to move up the control to keep the same rate of distillate that was happening before.
7. Shut off the plate and move the apparatus off the block when distillation has finished.
Analysis
1. Make two different graphs for the fractional and simple processes of distillation.
2. Volume will go on the x axis (horizontal) in measurements of .5 milliliters and temperature will go on the y axis (vertical) in measurements of degrees Celsius.
3. Fractional distillation should come out being the one that separates the two liquids better than simple distillation.
4. Determine the liquids from the boiling
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