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LECTURE 7. CHEMICAL KINETICS. CHEMICAL EQUILIBRIUM

PROGRAM QUESTIONS:

7.1 GENERAL

7.2. THE RATE OF CHEMICAL REACTION

7.3. CHEMICAL EQUILIBRIUM

7.1 General

Chemical kinetics is the study of rates of chemical processes and the impact of

various factors on them. The rate of chemical reaction is measured by the

concentration changing of one of the reactants ΔC per unit time Δτ

С
3
   [mol/dm  с]


There are homogeneous and heterogeneous (which have a phase separation

surface) reaction. In chemical reactions the aggregate state of substances is

indicated - solid (s), liquid (l), gas (g). Concentrations are usually indicated in

3
square brackets or by C, units of measurement are mole/dm .

7.2. The rate of chemical reaction

The kinetic equation of a reaction (mass action law): at a

constant temperature the rate of chemical reaction is directly

proportional to the product of the concentrations of reactants taken

in degrees equal to stoichiometric coefficients in the corresponding

reaction equation.

The equaition for a homogeneous reaction in general is as follows

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