Of the N2O4 molecules present in a sample of the gas, 12.5% are dissociated into NO2 when equilibrium is established at 25 C. N2O4(g) = 2 NO2(g) AH = 57.2 kJ Will the percent dissociation be greater than or less than 12.5% if (a) the reaction mixture is transferred to a vessel of twice the volume; (b) the temperature is raised to 50 C; (c) a catalyst is added to the reaction vessel; (d) neon gas is added to the reac- tion mixture in a constant-volume flask?