Properties of solutions

Solutions properties

learning Objectives :

1. Identify a mixture as a solution, a colloid, or a suspension.
2. Describe how the number of particles in a solution affects the osmotic pressure of a solution .
i.e. The size and number of solute particles in different types of mixtures play an important role in determining the properties of that mixture.
3. Isotonic , Hypotonic and Hypertonic .
4. Dialysis .

before read the lecture , please see the video attached for five minuties.

Electrolytes can be further classified as strong electrolytes or weak electrolytes.
For a strong electrolyte, such as sodium chloride (NaCl), there is 100% dissociation of the solute into ions. When the electrodes from the light bulb apparatus are placed in the NaCl solution.

A weak electrolyte :
is a compound that dissolves in water mostly as molecules. Only a few of the dissolved solute molecules undergo ionization, producing a small number of ions in solution .

In an aqueous solution of the weak electrolyte HF, a few HF molecules ionize to produce H+ and F- ions. As more H+ and F- ions form, some recombine to give HF molecules .