For the reaction at 298 K, 2 A + B → C. Δ H =400 kJ mol^-1 and Δ S =0.2 kJ mol^-1 K^-1. The reaction will become spontaneous above ____ K.

For the reaction at $\displaystyle 298 \mathrm{~K}, 2 \mathrm{~A}+\mathrm{B} \rightarrow \mathrm{C} . \Delta \mathrm{H}=400 \mathrm{~kJ} \mathrm{~mol}^{-1}$ and $\displaystyle \Delta \mathrm{S}=0.2 \mathrm{~kJ} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}$. The reaction will become spontaneous above $\displaystyle \_\_\_\_$ K.