For the reaction at 298 K, 2A + Bto C Delta H = 400 "kJ mol"^(-1) and Delta S = 0.2 "kJ K"^(-1) "mol"^(-1) At what temperature will the reaction become spontaneous considering Delta H and Delta S to beconstant over the temperature range.

For the reaction at 298 K, 2A + Bto C Delta H = 400 "kJ mol"^(-1) and

1.	For the reaction at 298 K, 2A + Bto C Delta H = 400 "kJ mol"^(-1) and Delta S = 0.2 "kJ K"^(-1) "mol"^(-1) At what temperature will the reaction become spontaneous considering Delta H and Delta S to beconstant over the temperature range.
Answer» Solution :For balanced REACTION `Delta G =0` `therefore Delta G = Delta H - T Delta S` `O = Delta H - T Delta S` `therefore T = (Delta H )/ (Delta S ) = (400)/(0.2) = 2000 K` `therefore` At 2000 K temperature of the reaction is equilibrium. So the reaction will be spontaneous over the RANGE of the temperature 2000 K.