## Chapter 13

## Q. 13.4.2

## Q. 13.4.2

## Step-by-Step

## Verified Solution

**You are asked** to calculate osmotic pressure for a solution containing an ionic solute.

**You are given** the mass of solute in the solution, the volume of the solution, the temperature of the solution, and the van’t Hoff factor for the ionic solute.

0.249 g CaCl_{2}\times \frac{1\text{ mol CaCl}_{2}}{111.0 \text{ g}} = 0.002244 mol CaCl_{2}

\frac{0.002244 \text{ mol CaCl}_{2}}{0.151 \text{ L}} = 0.0146 M

Π = *cRTi* = (0.0149 M)(0.082057 L · atm/K · mol)(298 K)(2.8) = 1.0 atm