The formation of NO from N 2 and O 2 is unfavorable at 298 K, but it

Question:

The formation of NO from N₂ and O₂ is unfavorable at 298 K, but it becomes increasingly favored at high temperatures such as those in an automobile cylinder. Using data (Δ_fH°, S° and Δ_fG°) in Appendix L, calculate the equilibrium constant for the reaction ½ N₂(g) + ½ O₂(g) → NO(g) at 298 K and at 1000 K.

Data given in Appendix L