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AIIMS 2006
Exam
AIIMS
Year
2006
Subject
Chemistry
Chapter
Thermodynamics (C)

AIIMS 2006 · Chemistry · Thermodynamics (C)

For a spontaneous process the correct statement is

For a spontaneous process the correct statement is

Options

  1. Aentropy of the system always increases
  2. Bfree energy of the system always increases
  3. Ctotal entropy change is always negative
  4. Dtotal entropy change is always positive.

Correct answer

D. total entropy change is always positive.

Step-by-step solution

ΔStotal =ΔSsystem +ΔSsurroundings \Delta S_{\text{total }}=\Delta S_{\text{system }}+\Delta S_{\text{surroundings }} For a spontaneous process ΔStotal \Delta S_{\text{total }} must be positive. i.e. ΔStotal >0\Delta S_{\text{total }}>0.
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