Use the data to decide if this reaction is spontaneous at 25 0C, and predict how ΔG0 will change with increasing temperature. Δs = mmix = 115.05 kJ/KĪn important reaction in the production of sulfuric acid is the oxidation of SO 2(g) to SO3(g): 2SO2(g)+O2(g) - 2SO3(g) At 298 K, ΔG0= -141.6 kJ ΔH0= -198.4 kJ and (a) (b) Calculate: (a) the heat transfer (b) the work done, and (c) the change in entropy.Īssuming constant cp Q = mmix cp (Tf -Ti) Heat is added until the temperature increases to 673 K while the pressure remains constant. ΔU = Ui − Uf = m o v i2 − m o v f2 = m o ( v i2 − v f2 ) =Ī mixture of ideal gases consists of 2 kmoles of CH 4, 1 kmole of N 2, and 1 kmole of CO2, all at corresponding temperatures 293 K and pressure 2x10 4 Pa.
Neglecting the changes in potential energy, conservation of energy requires that the sum of the kinetic energy and internal energy remains constant, i.e., 1 m o v i2 2 What is the increase in internal energy of the system, taking the object and the liquid as the system? Solution: Spring 2008 ME21 ME210/ 0/Adv Adv anced Thermodyn amics Final Exam, Tuesd ay, 2008 (19:45(19:45-22 22:00, :00, 2 hour s and 15 minu tes, open bo ok & notes)Īn object of mass 0.8 lbm traveling traveling at velocity velocity 200 ft/sec ft/sec enters enters a viscous viscous fluid and is essentially brought to rest before it strikes bottom.
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