Question

Berkeley-Hartley method cannot be used to determine the osmotic pressure of non-aqueous solutions.
A.True
B.False

Answer 1

In chemistry, some methods are used to measure the osmotic pressure of the solution. These types of methods and instruments measure osmotic pressure according to their viscosity, surface tension, specific conductance, etc.

Complete step by step answer:
Osmotic pressure - A pressure that is applied to a solution to prevent the flow of solvent through a semipermeable membrane.

Berkeley-Hartley - In its setup, there are two tubes. The first tube contains semi-permeable copper ferrocyanide. The other inner tube is in tube B and it's opening at the C point. Tube A has two sides D, E. Now, the solvent is added to A through E.

When the level of the capillary tube will move up and down due to osmosis. Then external pressure is applied to the solution so that the level in the capillary does not change. Afterward, we can note the osmotic pressure.

According to the above discussion, we find that the Berkeley-Hartley method is used to measure the osmotic pressure of the liquid solution. Therefore, it is true that it is not used to measure the osmotic pressure of a non-aqueous solution.
So, option A is the correct answer here.

Note: Viscosity - it is the resistance of fluid that is applied in the change in shape or movement. Surface tension - It is the capacity of liquid to shrink on the surface. Specific conductance - It is the conducting capacity of the solution. Osmosis - it is the movement of the solvent molecule through the permeable membrane, it happens in the region of higher solute concentration.