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| Q. |
Spontaneous change is one in there is: |
| A. | A lowering of entropy |
| B. | A lowering of free energy |
| C. | Increase in free energy |
| D. | An increase in Internal energy |
| Answer» B. A lowering of free energy | |
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Explanation: Entropy and enthalpy together make a new quantity, the Free Energy which, under conditions of constant temperature and pressure, determines the direction of spontaneous change. All spontaneous processes have a negative change in free energy. |
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