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CONTENTS MODULE 2.2 SOLUTIONS.

LECTURE 8. SOLUTIONS. SALTS HYDROLYSIS

PROGRAM QUESTIONS:

8.1 TYPES OF SOLUTIONS

8.2 WAYS OF EXPRESSING THE COMPOSITION OF SOLUTIONS

8.3 SALTS HYDROLYSIS

8.1 Types of solutions

Solutions are homogeneous systems which consist of a solvent,
dissolved substances and products of their interaction.

Depending on the aggregate state of the solvent there can be singled out solid,

liquid, and gaseous solutions.

Saturated solution is a solution in which at a certain temperature the substance no

longer dissolves. Unsaturated solution is a solution in which at a certain

temperature the substance can still dissolve.

Solubility is the maximum mass of a substance that can dissolve in 100 g of a

solvent.

8.2 Ways of expressing the solutions composition

1) mass fraction ω is the ratio of the mass of the dissolved substance to the total

mass of the solution:

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