Thermodynamics and Keq (5)

Calculate K for the reaction

N2O4 ? 2 NO2 DGorxn = +4.8 kJ

DGorxn = +4800 J = - (8.31 J/K)(298 K) ln K

DGorxn = - RT lnK

When ?Gorxn > 0, then K < 1 - reactant favoured

When ?Gorxn < 0, then K ɭ - product favoured

K = 0.14

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