Chapter 11, Problem 11.87QP

(a)

Interpretation Introduction

Interpretation: The molarity of each of the given solutions is to be calculated from its osmotic pressure at $25°\text{C}$.

Concept introduction: Semipermeable membrane is a thin film which is present almost in both living and nonliving things. This film comprises small pores through which solvent moves from one portion to another. Solvent always flows from lower concentration to higher concentration. This process of solvent flow is known as osmosis. Now if another side external pressure is applied then this process reversed and this applied reverse pressure is known as osmotic pressure. The higher osmotic pressure containing solution has the higher concentration. Basically, with the help of the value of osmotic pressure the concentration of solvent is calculated.

To determine: The molarity of ${\text{CH}}_3{\text{CH}}_2\text{OH}$ solution for the given value of osmotic pressure.

(b)

Interpretation Introduction

To determine: The molarity of ${\text{C}}_9{\text{H}}_8{\text{O}}_4$ (aspirin) solution for the given value of osmotic pressure.

(c)

Interpretation Introduction

To determine: The molarity of ${\text{CaCl}}_2$ solution for the given value of osmotic pressure.