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CMC Medical CMC-Medical Ludhiana Solved Paper-2007

  • question_answer
    A reaction has both \[\Delta \,H\] and \[\Delta \,S\] negative. The rate of reaction

    A)  increases with increase of temperature

    B)  increases with .decrease of temperature

    C)  remains unaffected by change of temperature

    D)  cannot be predicted for change in temperature

    Correct Answer: B

    Solution :

                    \[\Delta G=\Delta H-T\Delta S\]Negative\[\Delta H\]favours the process. Negative \[\Delta S\] opposes the process. If temperature is decreased, opposing factor decreases. Hence, rate of reaction increases.


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