Chapter 13, Problem 88E

Interpretation Introduction

To determine:

Determine the amount of solute needed to prepare each of the given aqueous solution.

i) NaCl solution prepared in 1.50 X 10² of water with melting point of -1.0 °C

ii) 2.50 X 10² mL of MgSO₄ with an osmotic pressure of 3.82 atm at 298 K

iii) 2.50 X 10² g of water containing FeCl₃, forming a solution with boiling point of 102 °C.

Solute	Expected Van’t Hoff factor	Measured Van’t Hoff factor
Non electrolyte	1	1
NaCl	2	1.9
MgSO4	2	1.3
MgCl2	3	2.7
K2SO4	3	2.6
FeCl3	4	3.4