2. Consider the thermodynamic data for the reaction below. At what temperature would the spontaneity change if ΔHrxn and ΔSrxn do not vary with temperature? N2 (g) + 3 F2 (g) → 2 NF3 (g) ΔHrxn = −249 kJ; ΔSrxn = −278 J/K