Liquid-liquid miscibility of three liquid system and one tie line

Liquid-Liquid Miscibility of three liquid system and position of one tie line

Liquid-liquid miscibility of three liquid system is based on the phase rules. It is sometimes necessary to know the mutual solubilities of liquids in a two-phase system. For example, you may need to know how much water is dissolved in an organic liquid with which it is in contact, and also the amount of the organic compound that is in the aqueous phase. In this experiment you will consider a three-component mixture (Chloroform – water – acetic acid at 25 oC and barometric pressure) and construct the corresponding ternary phase diagram.

According to the face rule, a single face in the three-component system may posses four degree of freedom.

F= C-P+2 ——————–(1)

F= degree of freedom. C = component. P= Phase

These are temperature, pressure and the compositions of the two of the three components. Because of the difficulty in graphically so many variables, temperature and pressure are generally held constant, so the face rule reduced to

F=C-P=3-P—————-(2)

This is the same special form of the face rule that is applies to the two component system of constant pressure only.

Download the PDF file of the report of  Liquid-liquid miscibility of three liquid system and position of one tie line

Graphical Representation of the Three Component system:

For three component system, the properties of equilateral triangle provides a convenient means of representing the composition of a three component system at constant temperature and pressure. Line AB represents the compositions of all the system that can be prepared from from pure A and B. At the point P the system is 60%B and 40% A.

Chemicals and Apparatus:

Five Stopped bottle, burette, Acetic acid, chloroform, water, etc.

Procedure:

  • Make 20g of mixture of CHCl3 and CH3COOH of varying composition in a set of nine stopped bottle with 10, 20, 30, 40, 50, 60, 70, 80, 90% CHCl3 by weight. The density of CHCl3 and CH3COOH are 1.50 and 1.05 respectively.
  • Now add water into the solution from burette with continuous shaking until the turbidity appears.
  • From the amount of water added and the initial amount of CHCl3 and CH3COOH the percentage of composition of the mixture are calculated and results are plotted in a triangle diagram.
  • Note the room temperature.

Download the PDF file of the report of  Liquid-liquid miscibility of three liquid system and position of one tie line

Data for liquid-liquid miscibility of three liquid system:

Data is in the image.

Download the PDF file of the report of  Liquid-liquid miscibility of three liquid system and position of one tie line

Calculation:

Result:

Download the PDF file of the report of  Liquid-liquid miscibility of three liquid system and position of one tie line

Leave a Reply

Your email address will not be published.


*