Chapter 11, Problem 11.91QP

Interpretation Introduction

Interpretation: A $188-\text{mg}$ sample of a nonelectrolyte isolated from throat lozenges was to be dissolved in water to make $10.0\text{ml}$ of solution at $25°\text{C}$. The molar mass of the compound is to be calculated if the osmotic pressure of the resulting solution was 4.89 atm.

Concept introduction: Semipermeable membrane is a thin film which is present almost in both living and nonliving things. 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. Nonelectrolytes are the non-ionic compounds whose van’t Hoff factor value is always one.

To determine: The molar mass of the compound, if the osmotic pressure of the resulting solution was 4.89 atm.