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  3. Chemistry
  4. The entropy change for a non-spontaneous reaction is 140 J K -1 mol -1 at 298 K. The reaction is

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Q. The entropy change for a non-spontaneous reaction is $140 \,J \,K ^{-1} mol ^{-1}$ at $298\, K$. The reaction is

Thermodynamics

Solution:

Since the reaction is non - spontaneous.

$\therefore \Delta G$ is positive.

As $\Delta S$ is positive (given) hence $\Delta H$ must be positive also. It means reaction is endothermic.