The dissociation of N2O4(g) is important in photochemical air pollution, the reaction can be written N2O4(g) ⇆ 2NO2(g) Calculate the fraction of N2O4 molecules that are dissociated at equilibrium when T = 298 K and the total pressure P = 1.50 bar.
The dissociation of N2O4(g) is important in photochemical air pollution, the reaction can be written
N2O4(g) ⇆ 2NO2(g)
Calculate the fraction of N2O4 molecules that are dissociated at equilibrium when T = 298 K and the total pressure P = 1.50 bar.
In the reaction that takes places as , the fraction of dissociation is the ratio NO2 to that of N2O4 raised to the power of their respective stoichiometric coefficients.
In order to know the fraction of dissociation, the equilibrium constant (Kp) of the gas phase reaction in terms of pressure must be calculated.
The equilibrium constant is calculated from standard Gibbs free energy of the reaction .
The relation between the equilibrium constant and standard Gibbs free energy of the reaction is as follows.
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