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The thermodynamic behavior of a mixture of gases depends upon the individual properties and the amounts of its constituent gases. Because substances in the gaseous phase are so miscible with each other, there is no limit to the number of different gaseous mixture that can be formed. From a given set of components, and a wide variation is therefore possible in the properties of gaseous mixtures that can be formed from a given set of components. and a wide variation is therefore possibe in the properties of gaseos mixtures. Furthermore, individual cinstituent of gases mixtures often reat chemicaly with each other, and these reaction introduce another factors that exert a strong infuence in the properties of a gas.
This lecture deals only with mixture of inert gases. A homogenous mixture is frequently treated as if it considered a single component rather than many. Properties of the individual constitutes of an inert gas tend to be submerged so that the gas behaves, in certain way, as though it were a single pure substance.
this equation deals with ideal gases. equation are derived that express the properties of mixtures in term of yhe properties of the constituents. it is assued that each constituent is unaffected by the presence of the other constituents in the mixture. Mixture are treated in which no chemical reaction, condensation, or or evaporation take place, and the derived expression apply, in general, to gas mixture over a wide range of temperature and pressure.