Chapter 13, Problem 13.22A

Interpretation Introduction

Interpretation:

“The osmotic pressure measurement supports the claim that the powder is sucrose.” should be explained.

Concept introduction:

• The number of moles of solute per litter of solution is known as molarity of the solution.

• The osmosis is measured by osmotic pressure, which is proportional to the molar concentration of solute.

  $\text{π=i}\left[\text{M}\right]\text{RT}$

Given:

Amount of unknown powder= $\text{0}\text{.512 g}$

Volume of water = $\text{100}\text{.0 mL}$

Temperature ${\text{25}}^{\text{o}}\text{C}$ , $\text{T=298 K}$

Osmotic pressure $\text{278 mmHg}$