Differentiate between oil in water and water in oil emulsions.

1.	Differentiate between oil in water and water in oil emulsions.
Answer» Oil in water: 1. Oil is the dispersed phase and water is the dispersion medium. 2. If water is added, it will be miscible with the emulsion. 3. Addition of small amount of an electrolyte makes the emulsion conducting. 4. Continuous phase is water. 5. Basic metal sulphates, water soluble alkali metal soaps are used as emulsifiers. Water in oil: 1. Water is the dispersed phase and oil is the dispersion medium. 2. If oil is added, it will be miscible with the emulsion. 3. Addition of small amount of an electrolyte has no effect on conducting power. 4. Continuous phase is oil. 5. Water insoluble soaps such as those of Zn, Al, Fe, alkaline earth metals are used as emulsifiers.

Answer»

Oil in water:

1. Oil is the dispersed phase and water is the dispersion medium.

2. If water is added, it will be miscible with the emulsion.

3. Addition of small amount of an electrolyte makes the emulsion conducting.

4. Continuous phase is water.

5. Basic metal sulphates, water soluble alkali metal soaps are used as emulsifiers.

Water in oil:

1. Water is the dispersed phase and oil is the dispersion medium.

2. If oil is added, it will be miscible with the emulsion.

3. Addition of small amount of an electrolyte has no effect on conducting power.

4. Continuous phase is oil.

5. Water insoluble soaps such as those of Zn, Al, Fe, alkaline earth metals are used as emulsifiers.

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