Question

suggests that a process is spontaneous

• A. $\Delta H<0$
• B. $\Delta S>0$
• C. $\Delta G<0$
• D. $\Delta G>0$

Answer 1

The correct option is C $\Delta G<0$

$\Delta G$ of a spontaneous process is always negative. A process having $\Delta H<0$ or $\Delta S>0$ may be non-spontaneous depending on the temperature and the magnitude of entropy. Also, processes that have $\Delta H>0$ or $\Delta S<0$ can also be spontaneous depending on the temperature of the system and the magnitudes of enthalpy and entropy changes.