Chemical Thermodynamics Question 30

Question: In which of the following conditions a chemical reaction can not occur [AMU 1999]

Options:

A) $ \Delta H $ and $ \Delta S $ increase and $ T\Delta S>\Delta H $

B) $ \Delta H $ and $ \Delta S $ decrease and $ \Delta H>T\Delta S $

C) $ \Delta H $ increases and $ \Delta S $ decreases

D) $ \Delta H $ decreases and $ \Delta S $ increases

Show Answer

Answer:

Correct Answer: C

Solution:

If $ \Delta H=+,ve $ and $ \Delta S=-,ve $ than the reaction is non-spontaneous i.e. can not occur.



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