Answered: What is osmotic pressure? Why it is a…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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What is osmotic pressure? Why it is a colligative property?

Expert Solution

Step 1

Osmotic pressure can be defined as the minimum pressure that must be applied to a solution to halt the flow of solvent molecules through a semipermeable membrane(osmosis). It is a colligative property. It can be calculate with the help of given formula:

Step 2

$π = iCRT . . . . . . . . . . 1 s t Where, π = osmotic pressure i = van' t Hoff factor C = molar concentration of the solute in the solution R = universal gas constant T = temperature$

This relationship between the osmotic pressure of a solution and the molar concentration of the solute was put forward by the dutch chemist Jacobus van't Hoff. It is important to note that this equation only holds true for solutions that behave like ideal solution.

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