Geo-Scientist Prelims 2026 Chemistry Q56: Which one of the following statements must be true for an…

Which one of the following statements must be true for an endothermic reaction to be spontaneous under standard conditions at constant pressure and at a certain temperature T ?

1. (a) ΔS° must be positive and greater than \(\frac{\Delta H^\circ}{T}\)
2. (b) ΔS° must be positive and less than \(\frac{\Delta H^\circ}{T}\)
3. (c) ΔS° must be negative and greater than \(-\frac{\Delta H^\circ}{T}\)
4. (d) ΔS° must be negative and less than \(+\frac{\Delta H^\circ}{T}\)