Answered: Consider the six different solutions…

General, Organic, and Biological Chemistry

7th Edition

ISBN:9781285853918

Author:H. Stephen Stoker

Publisher:H. Stephen Stoker

Chapter8: Solutions

Section: Chapter Questions

Problem 8.114EP: Consider two solutions, A and B, separated by an osmotic semipermeable membrane that allows only...

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Question

Consider the six different solutions listed in the table below.

Solution Number	Type of Solution
1	0.90 m MgCl₂
2	1.20 m MgCl₂
3	0.30 m KCl
4	0.90 m KCl
5	0.30 m glucose
6	1.20 m NaCl

(a) Arrange these six solutions in order of decreasing osmotic pressures if the temperature of all solutions is 25°C.

(b) If the boiling-point elevations of these solutions were being analyzed in place of osmotic pressures, how would the order in part (a) change?

Expert Solution

Step 1

Colligative properties:

The colligative properties are those properties of solutions that depend on the ratio of the number of solute particles to the number of solvent molecules in a solution, and not on the nature of the solute particles. The number ratio can be related to the molality of the solution. These properties depend on the nature of the solvent.

Colligative properties include:

Relative lowering of vapor pressure (Raoult's law)

Elevation of boiling point

Depression of freezing point

Osmotic pressure

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