Determine the Equilibrium Constant for the Following Reaction at 655

Determine the equilibrium constant for the following reaction at 655 K: HCN(g) + 2H₂(g) → CH₃NH₂(g) Δ_rH° = -158 kJ mol^-1; Δ_rS°= -219.9 J K^-1 mol^-1

A) 3.99 × 10¹²
B) 13.0
C) 2.51 × 10^-13
D) 3.26 × 10^-12
E) 3.07 × 10¹¹