Question

When fats are mixed with ethanol ant then mixed with water
What emulsion is produced?

Answer 1

Answer:

I hope it's helpfull

Explanation:

☆This test is done to show the presence of lipids in a substance. The substance is first dissolved in ethanol. This solution is then dissolved in water. If lipids are present in the mixture, it will precipitates and forms an emulsion.

Process:

1 : Add the food sample to 2 cm3 of ethanol, shake well.

2: Allow to settle in a test tube rack for 2 minutes for food to dissolve in ethanol.

3: Empty any clear liquid into a test tube containing 2 cm3 of distilled H2O.

4: A MILKY-WHITE EMULSION is a positive result: lipid is present.

5 :If the mixture remains clear, there are no fats present in the sample

Explanation :

1: Lipids are insoluble in water and soluble in ethanol (an alcohol).

2: After lipids have been dissolved in ethanol and then added to H2O, they will form tiny dispersed droplets in the water. This is called an emulsion.

3 : These droplets scatter light as it passes through the water so it appears white and cloudy.