[Olympiad] For a reaction, ΔH = +175 kJ/mol and ΔS = +150 J/mol·K. At what minimum temperature (in °C) does the reaction become spontaneous?
- 1167 °C
- 925 °C
- 894 °C
- 1440 °C
📝 Detailed explanation
Spontaneous when ΔG < 0. ΔH - TΔS < 0 => T > ΔH/ΔS.T > 175,000 / 150 = 1166.67 K.
T(°C) = 1166.67 - 273.15 = 893.52 °C.