1.
For the reaction A(g)+B(g)→C(g)+D(g)A(g) + B(g) \rightarrow C(g) + D(g), ΔH∘\Delta H^\circ and ΔS∘\Delta S^\circ are, respectively, −29.8-29.8 kJ mol−1^{-1} and −0.100-0.100 kJ K−1^{-1} mol−1^{-1} at 298 K. The equilibrium constant for the reaction at 298 K is: