MP Board · Class 11 · Chemistry · Chemical ThermodynamicsA process is always spontaneous at all temperatures if:
Step-by-Step Solution
From Gibbs Helmholtz equation $\Delta G = \Delta H - T\Delta S$, if $\Delta H < 0$ (exothermic) and $\Delta S > 0$ (increase in disorder), $\Delta G$ will always be negative regardless of the temperature $T$.
Detailed Options Breakdown
Option : $\Delta H < 0$ and $\Delta S > 0$ (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 1: $\Delta H > 0$ and $\Delta S < 0$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Chemical Thermodynamics.
Option 2: $\Delta H > 0$ and $\Delta S > 0$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Chemical Thermodynamics.
Option 3: $\Delta H < 0$ and $\Delta S < 0$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Chemical Thermodynamics.
💡 Study Guide: This question tests core syllabus concepts from Chemical Thermodynamics. For formulas, key summaries, and mock exam reference guides, read the full Chemical Thermodynamics Revision Notes.