In all spontaneous processes,which of the following is true?
- AThe entropy of the universe decreases.
- BThe free energy of the system increases.
- CThe free energy of the system decreases.
- DThe enthalpy of the system increases.
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Similar Questions
For independent processes at $300 \ K$,determine the number of non-spontaneous processes from the following table:
Process $\Delta H \ (kJ \ mol^{-1})$ $\Delta S \ (J \ K^{-1} \ mol^{-1})$ $A$ $-25$ $-80$ $B$ $-22$ $40$ $C$ $25$ $-50$ $D$ $22$ $20$
| Process | $\Delta H \ (kJ \ mol^{-1})$ | $\Delta S \ (J \ K^{-1} \ mol^{-1})$ |
|---|---|---|
| $A$ | $-25$ | $-80$ |
| $B$ | $-22$ | $40$ |
| $C$ | $25$ | $-50$ |
| $D$ | $22$ | $20$ |
When is a reaction spontaneous?
For the melting of $3 \ moles$ of water at $0 \, ^\circ C$,the $\Delta G^o$ is:
Easy
View SolutionThe occurrence of a reaction is impossible if
MediumAIIMS 1991
View SolutionBased on the provided table,which of the following options correctly identifies the spontaneous reactions?
$\Delta_r H^{\circ}$ $\Delta_r S^{\circ}$ $\Delta_r G^{\circ}$ Spontaneity of the reaction $A$ $+$ $+$ $+$ Spontaneous at low $T$ $B$ $+$ $+$ $-$ Spontaneous at high $T$ $C$ $-$ $-$ $-$ Spontaneous at low $T$ $D$ $+$ $-$ $+$ Spontaneous at high $T$
| $\Delta_r H^{\circ}$ | $\Delta_r S^{\circ}$ | $\Delta_r G^{\circ}$ | Spontaneity of the reaction | |
|---|---|---|---|---|
| $A$ | $+$ | $+$ | $+$ | Spontaneous at low $T$ |
| $B$ | $+$ | $+$ | $-$ | Spontaneous at high $T$ |
| $C$ | $-$ | $-$ | $-$ | Spontaneous at low $T$ |
| $D$ | $+$ | $-$ | $+$ | Spontaneous at high $T$ |
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