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Chapitre 5

Gaz

Pression et mesure de la pression
Pression et mesure de la pression
Gas pressure is caused by force exerted by gas molecules colliding with the surfaces of objects. Although the force of each collision is very small, any ...
Lois des gaz
Lois des gaz
Through experiments, scientists established the mathematical relationships between pairs of variables, such as pressure and temperature, pressure and ...
Applications de la loi des gaz parfaits : masse molaire, densité et volume
Applications de la loi des gaz parfaits : masse molaire, densité et volume
The volume occupied by one mole of a substance is its molar volume. The ideal gas law, PV = nRT,  suggests that the volume of a given quantity of gas ...
Mélange de gaz - Loi de Dalton sur les pressions partielles
Mélange de gaz - Loi de Dalton sur les pressions partielles
Unless individual gases chemically react with each other, the individual gases in a mixture of gases do not affect each other’s pressure. Each gas ...
Stœchiométrie chimique et gaz
Stœchiométrie chimique et gaz
Chemical stoichiometry describes the quantitative relationships between reactants and products in chemical reactions. In addition to measuring quantities ...
Théorie cinétique des gaz : postulats de base
Théorie cinétique des gaz : postulats de base
The ideal-gas equation, which is empirical, describes the behavior of gases by establishing relationships between their macroscopic properties. For ...
Théorie cinétique et lois des gaz
Théorie cinétique et lois des gaz
The test of the kinetic molecular theory (KMT) and its postulates is its ability to explain and describe the behavior of a gas. The various gas laws ...
Vitesses moléculaires et énergie cinétique
Vitesses moléculaires et énergie cinétique
The kinetic molecular theory qualitatively explains the behaviors described by the various gas laws. The postulates of this theory may be applied in a ...
Effusion et diffusion
Effusion et diffusion
Although gaseous molecules travel at tremendous speeds (hundreds of meters per second), they collide with other gaseous molecules and travel in many ...
Gaz réels - déviation par rapport à la loi des gaz parfaits
Gaz réels - déviation par rapport à la loi des gaz parfaits
Thus far, the ideal gas law, PV = nRT, has been applied to a variety of different types of problems, ranging from reaction stoichiometry and empirical and ...
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