Separation of Oil and Water Using Density Principles

The video tutorial explains how to separate a mixture of oil and water using a separating funnel. It begins with an introduction to the concept of density differences between oil and water, followed by a detailed explanation of the separating funnel apparatus. The video then demonstrates the setup and execution of the experiment, highlighting the importance of allowing the mixture to settle and using the stopcock to control the flow of liquids. The tutorial concludes with a reminder that the method is applicable only to immiscible liquids.

Why does oil float on water?

• Because oil is more viscous than water

• Because oil is less dense than water

• Because oil is denser than water

• Because oil is heavier than water

What is the primary function of a separating funnel?

• To separate two immiscible liquids

• To heat liquids

• To mix two liquids

• To measure the density of liquids

What is the role of the stopcock in a separating funnel?

• To control the flow of liquid

• To mix the liquid

• To heat the liquid

• To measure the liquid

What should you do before starting the separation experiment?

• Shake the mixture

• Tightly close the stopcock

• Add water first

• Open the stopcock

How long should the mixture be allowed to settle in the separating funnel?

• 5 minutes

• 20 minutes

• 15 minutes

• 10 minutes

What happens after 15 minutes of settling the mixture?

• The water evaporates

• The oil floats on top of the water

• The oil settles at the bottom

• The oil and water mix together

What is a necessary condition for using a separating funnel?

• The liquids must be immiscible

• The liquids must be heated

• The liquids must be the same density

• The liquids must be miscible