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NEET Sample Paper NEET Sample Test Paper-89

  • question_answer
    A reaction at 1 bar is non-spontaneous at low temperature but becomes spontaneous at high temperature. Identify the correct statement about the reaction among the following:

    A) \[\Delta H\] is negative while \[\Delta S\] is positive.

    B) Both \[\Delta H\] and \[\Delta S\] are negative.

    C) \[\Delta H\] is positive while \[\Delta S\] is negative.

    D) Both \[\Delta H\]and \[\Delta S\] are positive.

    Correct Answer: D

    Solution :

    [d] \[\Delta G=\Delta H-T\Delta S\] For a spontaneous reaction \[\Delta G=-ve\] which is possible when both \[\Delta H\] and \[\Delta S\] are positive at high temperature and hence the reaction becomes spontaneous.


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