A) Exothermic and increasing disorder
B) Exothermic and decreasing disorder
C) Endothermic and increasing disorder
D) Endothermic and decreasing disorder
Correct Answer: A
Solution :
| Measure of disorder of a system is nothing but entropy. |
| For a spontaneous reaction,\[\Delta G<0\]. As per Gibbs Helmholtz equation, |
| \[\Delta G=\Delta H-T\Delta S\] |
| Thus \[\Delta G\] is \[-ve\]only |
| When \[\Delta H=-ve\] (exothermic) |
| and \[\Delta S=+ve\](increasing disorder) |
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