General Chemistry
ΔSsys: (+), ΔSsurr: (+), non-spontaneous only at all temperatures
ΔSsys: (+), ΔSsurr: (+), spontaneous only at hight temperatures
ΔSsys: (-), ΔSsurr: (+), spontaneous only at low temperatures
ΔSsys: (-), ΔSsurr: (-), spontaneous only at all temperatures