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| Condition | Details |
|---|---|
| $A$. $\Delta H: +, \Delta S: -$ | $T$: any $T$,Spontaneity: Non-spontaneous |
| $B$. $\Delta H: +, \Delta S: +$ | $T$: low $T$,Spontaneity: Non-spontaneous |
| $C$. $\Delta H: -, \Delta S: -$ | $T$: low $T$,Spontaneity: Spontaneous |
| $D$. $\Delta H: -, \Delta S: +$ | $T$: any $T$,Spontaneity: Spontaneous |
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