Geo-Scientist Prelims 2024 Chemistry Q57: Consider the following statements regarding change of enthalpy (ΔH)…

Consider the following statements regarding change of enthalpy (ΔH) and change of entropy (ΔS) for a chemical reaction at any temperature T :

1. If ΔH is negative and ΔS is positive, the reaction will be spontaneous at all temperatures.
2. If ΔH is positive and ΔS is negative, the reaction will be spontaneous at low temperatures.
3. When both ΔH and ΔS are positive, the reaction will proceed spontaneously at high temperatures.

Which of the statements given above is/are correct?

1. (a) 1 and 2
2. (b) 1 and 3
3. (c) 2 and 3
4. (d) 2 only