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NEET Sample Paper NEET Sample Test Paper-77

  • question_answer
    Spontaneity of a process is decided by the value of\[\Delta \,A\]. A negative value of \[\Delta \,G\] shows a spontaneous process. Since, the value of \[\Delta \,G\] depends upon \[\Delta S and \Delta H\], these two also play an important role for deciding spontaneity of a process. The condition for spontaneity of any chemical reaction, if

    A)  \[T\Delta S =\Delta H\] and both \[\Delta H and \Delta S\] are positive

    B)  \[T\Delta S >\Delta H\] and both \[\Delta H and \Delta S\] are positive

    C)  \[T\Delta S <\Delta H\] and both \[\Delta H and \Delta S\] are positive

    D)  \[T\Delta S >\Delta H\] and \[\Delta H\] is positive and \[\Delta S\] is negative

    Correct Answer: B

    Solution :

    If \[\Delta S = positive, \Delta H = positive\] Then, \[\Delta G\] will be negative if and only if \[\operatorname{T}\Delta S\,\,>\,\,\Delta H\]


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