Separating Components of Two Immiscible Liquids

(A) OIL-WATER MIXTURE

(B) CHLOROFORM-WATER MIXTURE

THEORY:

Immiscible liquid-liquid mixtures like oil and water, or chloroform and water can be separated by using a separating funnel like the one shown in figure 2.5.

APPARATUS :

1) Separating funnel

2) Beakers

3) Measuring cylinders (0-100 ml)

CHEMICALS:

1) Oil

2) Chloroform

PROCEDURE :

i) Put approximately 10 ml of oil and 50 ml of water into a separating funnel. Close with the stopper.

ii) Shake the liquids for about half a minute, and then hold the funnel vertically to allow them to settle. The liquids form two distinct layers with a line of demarcation between the two.

iii) Remove the stopper, and slowly open the tap to run down the bottom layer into a beaker.

iv) Try to stop the flow of liquid as soon as the line of demarcation reaches the tap.

v) Run the upper liquid into another beaker.

Repeat the above procedure by taking chloroform water system in the separating funnel (in the ratio of 10:50 by volume as before)