University Experiment

Solubility diagram of two partially miscible liquids

Article No: P3030501

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

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