Chapter 17, Problem 66E

Interpretation Introduction

Interpretation: The concentration of solute particles in water for an isotonic eye-drop solution needs to be determined, if the human eye has osmotic pressure of 8.00 atm at 25°C.

Concept Introduction: Colligative properties are the properties of solution which depend on the number of particles present in the solution. Some common examples of colligative properties are depression in freezing point, elevation in boiling point, osmotic pressure, lowering in vapor pressure etc. The number of particles is shown with the help of van’t Hoff factor ‘i’.

The mathematical expression for osmotic pressure is as given below:

  $\begin{array}{l}\text{π = }i\times \text{C × R ×T}\\ \text{π = osmotic pressure}\\ \text{C = concentration}\\ \text{R= universal gas constant}\\ \text{T = temperature}\end{array}$