Solubility diagram of two partially miscible liquids
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Unknown 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.
Learning objectives - Binary system
- Miscibility gap
- Mixed phase
- Coexisting phase
- Raoult's law
- Critical dissolution temperature
Necessary accessories - Precision balance 620g/0.001g
Scope of delivery |
Immersion thermostat Alpha A, up to 100 °C, 230 V
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08493-93
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1
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External circulation set for thermostat Alpha A
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08493-02
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1
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Bath for thermostat, makrolon
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08487-02
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1
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Rack for 20 test tubes, Makrolon
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08487-03
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1
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Rubber hose, various diameters
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39282-00
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3
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Hose clip, diam. 8-16 mm, 1 pc.
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40996-02
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4
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Burette with straight glass stopcock, 10 ml
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47152-03
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1
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Burette clamp, roller mount., 2 pl.
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37720-00
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1
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Retort stand, h = 750 mm
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37694-00
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1
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Funnels (glass), Boro, various sizes
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34457-00
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1
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Test tubes,160x16mm, 10pcs
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36301-03
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1
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Rubber stoppers, without bore, various diameters
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39254-00
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7
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Beakers, Boro, high form, various sizes
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46032-00
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1
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Wash bottle, plastic, 500 ml
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33931-00
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1
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Spoon, special steel
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33398-00
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1
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Pasteur pipettes, 250 pcs
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36590-00
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1
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Rubber caps, 10 pcs
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39275-03
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1
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Laboratory pen, waterproof, black
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38711-00
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1
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Tubing connector, ID 6-10mm
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47516-01
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2
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