Chapter 16, Problem 16.51P

Interpretation Introduction

Interpretation:

The minimum pressure in $kPa$ that must be applied at ${25}^{\circ }C$ to obtain pure water by reverse osmosis from water that is $0.15MinNaCl$ and $0.015MinMgS{O}_4$ has to be calculated.

Concept Introduction:

The relationship between osmotic pressure, solute concentration and temperature for a solution is given below.

  $\Pi =RT{M}_c$

Where, $R$ is universal gas constant, $T$ is the absolute temperature and $M_c$ is the colligative molarity.  The colligative molarity can be expressed as given below.

  $M_c=i\times M$

Where, $i$ is the number of solute particles produced per formula unit that is dissolved.