A only.

P6.38 If the reaction Fe2N(s)+3/2H2(g) 2Fe(s)+NH3(g) comes to equilibrium at a total pressure of 1 bar, analysis of the gas shows that at 700. and 800.K, PNH3/PH2=1.971 and 0.9780 , respectively, if only H2(g) was initially present in the gas phase and Fe2N(s) was in excess. a. Calculate KP at 700 . and 800.K. b. Calculate rS at 700.K and 800.K and rH, assuming that it is independent of temperature. c. Calculate rG for this reaction at 298.15K