Chemical Thermodynamics Question 12
Question: The occurrence of a reaction is impossible if [AIIMS 1982, 91; MP PET 1997; MP PMT 1999; DPMT 2002]
Options:
A) $ \Delta H $ is +ve ; $ \Delta S $ is also + ve but $ \Delta H<T\Delta S $
B) $ \Delta H $ is - ve ; $ \Delta S $ is also - ve but $ \Delta H,>,T\Delta S $
C) $ \Delta H $ is - ve ; $ \Delta S $ is + ve
D) $ \Delta H $ is + ve ; $ \Delta S $ is - ve
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Answer:
Correct Answer: D
Solution:
$ +ve\Delta H $ and $ -ve\Delta S $ both oppose the reaction.