Principle
A number of different mixtures of phenol and water are prepared and heated until complete miscibility is achieved. As the mixtures cool, two-phase systems form at certain temperatures which are recognisable by the appearance of turbidity. Plotting separation temperatures against compositions of the mixtures gives the separation curve.
Benefits
- Good and reproducible results due to temperature control in the experiment.
Tasks
- Plot the separation curve of the phenol / water binary system and prepare a temperature / mass fraction diagram.
- Determine the critical separation point.
What you can learn about
- Binary system
- Miscibility gap
- Mixed phase
- Coexisting phase
- Raoult's law
- Critical dissolution temperature
Necessary accessories
- Precision balance 620g/0.001g
Scope of Supply
Device Name | Item no. | Qty |
---|
Wash bottle, plastic, 500 ml | 33931-00 | 1,00 |
Bath for thermostat, makrolon | 08487-02 | 1,00 |
Hose clip, diam. 8-16 mm, 1 pc. | 40996-02 | 4,00 |
Test tube, 160 x 16 mm, 100 pcs | 37656-10 | 1,00 |
Rubber stopper,d=18/14mm,w/o hole | 39254-00 | 7,00 |
Funnel, glass, top dia. 50 mm | 34457-00 | 1,00 |
Rack for 20 test tubes, Makrolon | 08487-03 | 1,00 |
Burette, 10 ml, grad. 0.05 ml | 47152-01 | 1,00 |
Retort stand, h = 750 mm | 37694-00 | 1,00 |
Water, distilled 5 l | 31246-81 | 1,00 |
Rubber caps, 10 pcs | 39275-03 | 1,00 |
Beaker, DURAN®, tall form, 150 ml | 36003-00 | 1,00 |
External circulation set for thermostat Alpha A | 08493-02 | 1,00 |
Burette clamp, roller mount., 2 pl. | 37720-00 | 1,00 |
Spoon, special steel | 33398-00 | 1,00 |
Rubber tubing, i.d. 6 mm | 39282-00 | 3,00 |
Pasteur pipettes, 250 pcs | 36590-00 | 1,00 |
Immersion thermostat Alpha A, 230 V | 08493-93 | 1,00 |
Laboratory pen, waterproof, black | 38711-00 | 1,00 |
Tubing connector, ID 6-10mm | 47516-01 | 2,00 |
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