1- 2HBr(g) + Cl₂(g)2HCl(g) + Br₂(g) H = -81.1 kJ and S = -1.2 J/K The equilibrium constant for this reaction at 278.0 K is ___ Assume that H and S are independent of temperature.

2- N₂(g) + 3H₂(g)2NH₃(g) H = -92.2 kJ and S = -198.7 J/K The equilibrium constant for this reaction at 274.0 K is____ . Assume that H and S are independent of temperature.

3-

NH₄NO₃(aq)N₂O(g) + 2H₂O(l) H = -149.6 kJ and S = 99.9 J/K The equilibrium constant for this reaction at 274.0 K is ____. Assume that H and S are independent of temperature.