Chapter 17, Problem 131CP

(a)

Interpretation Introduction

Interpretation: The total volume of water that needs to be processes for the production of $45\text{ L}$ pure water needs to be determined.

Concept Introduction:The excess pressure applied to a solution in order to prevent the passage of solvent to the solution is said to be osmotic pressure. The formula to determine the osmotic pressure, $\pi$ is:

  $\pi \text{ = iMRT}$ - (1)

Where $\text{i}$ is van’t Hoff’s factor, $\text{M}$ is molar concentration, $\text{R}$ is ideal gas constant and $\text{T}$ is temperature in K.

(b)

Interpretation Introduction

Interpretation: Whether the same system will work for purifying sea water, $\text{0}\text{.60 M NaCl}$ or not should be determined.

Concept Introduction:The excess pressure applied to a solution in order to prevent the passage of solvent to the solution is said to be osmotic pressure. The formula to determine the osmotic pressure, $\pi$ is:

  $\pi \text{ = iMRT}$ - (1)

Where $\text{i}$ is van’t Hoff’s factor, $\text{M}$ is molar concentration, $\text{R}$ is ideal gas constant and $\text{T}$ is temperature in K.