How much dinitrogen tetroxide (N2O4) will be left from two moles initially if the dinitrogen tetroxide decomposes to nitrogen dioxide (NO2) at 0.25 bar and 305 K? Assume that the standard enthalpy change of reaction for the above is independent of temperature.

How much dinitrogen tetroxide (N2O4) will be left from two moles initially if the dinitrogen tetroxide decomposes to nitrogen dioxide (NO2) at 0.25 bar and 305 K? Assume that the standard enthalpy change of reaction for the above is independent of temperature.




Apply short-cut van`t Hoff equation to find ??G_305K^0 since heat of reaction is not a function of temperature:



Where ??G_T^0 is the Gibbs free energy for reaction @ 305K, T=305 K, T_R=298 K, ??H_R^0=?????H_(f,products)^0-? ?????H_(f,reactants)^0 ? and ??G_R^0=?????G_(f,products)^0-? ?????G_(f,reactants)^0 ?. Values for ??H_f^0 and ??G_f^0 are obtained from Appendix C-2:









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