JEE Main & Advanced Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank 2nd and 3rd law of thermodynamics and Entropy

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

    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

    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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