Chemical Thermodynamics Question 9

Question: Which of the following pairs of a chemical reaction is certain to result in spontaneous reaction - [CBSE PMT 2005]

Options:

A) Exothermic and decreasing disorder

B) Endothermic and increasing disorder

C) Exothermic and increasing disorder

D) Endothermic and decreasing disorder

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Answer:

Correct Answer: C

Solution:

$ \Delta G=\Delta H-T\Delta S $ for spontaneous process $ \Delta G $ should be negative in option (3) $ \Delta H=-ve\ and\ \Delta S=+ve $ than $ \Delta G=(-ve)-T(+ve) $

$ =-,ve $



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