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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 4

  • question_answer
    Which of the following reactions is said to be entropy driven?

    A) Endothermic reaction with positive entropy change and high temperature

    B) Endothermic reaction with negative entropy change and low temperature

    C) Exothermic reaction with positive entropy change and high temperature

    D) Exothermic reaction with negative entropy change and low temperature

    Correct Answer: A

    Solution :

    [a]: For endothermic reaction, \[\Delta H=+ve\]. For reaction to be spontaneous, \[\Delta S\]must be positive and also\[T\Delta S\]must be greater than \[\Delta H\]in magnitude. The reaction is then said to be entropy driven.


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