Put the following gases in order of decreasing molar entropy: H20, H2O2, H2S O H2O2 = H2S > H2O %3D H20 > H2S > H202 O H2S > H2O2 > H20 O H2O2 > H2S > H2O

What is the entropy change when 1.20 moles of CCl₂F₂ condenses at 25.0 °C? [∆H(vap) = 17.2 kJ/mol at 25.0 °C]?

Which of the following result in an increase in the entropy of the system? I. H-H II. Br₂(g) → Br₂(7) III. NaBr(s) — Na*(aq) + Br (aq) IV. 02(298 K) → O₂(373 K) V. NH3(1 atm, 298 K) → NH3(3 atm, 298 K) I II, V I, III, IV I, II, III, IV I, II, III, V

1.  Ammonia can be made from the reaction of nitrogen and hydrogen: N2  (g)  +  3 H2 (g)      ⟺        2 NH3 (g) For this reaction, K = 1.6 x 102 and ΔH = -91.8 kcal/mole at 25oC. Is the reaction endothermic or exothermic? Briefly explain. Is there in increase in entropy, a decrease in entropy, or no change in entropy?  Briefly explain. At 25oC, is this reaction product favored or reactant favored? Briefly explain. Do you expect this reaction to be spontaneous at all temperatures?  Briefly explain.