JEE Main & Advanced JEE Main Paper (Held On 9 April 2016)

  • 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:   JEE Main Online Paper (Held On 09 April 2016)

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

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

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

    D) Both \[\Delta S\]and \[\Delta S\] are negative.

    Correct Answer: A

    Solution :

                    \[\Delta G=\Delta H-T.\Delta S\] If \[\Delta H\And \Delta S\]are both positive, then \[\Delta G\] may be negative at high temperature hence reaction becomes spontaneous at high temperature.


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