For a spontaneous process the correct statement is -

Options

A. entropy of the system always increases
B. free energy of the system always increases
C. total entropy change is always negative
D. total entropy change is always positive.

Answer

d

Explanation

`Delta S_("total") =DeltaS_("System")+DeltaS_("soroundings")`
For a spontaneous process `DeltaS_("total")` must be positive .
i.e., `DeltaS_("total") gt 0`.