J & K CET Engineering J and K - CET Engineering Solved Paper-2011

  • question_answer
    Pick out the wrong statement

    A)  The standard free energy of formation of  elements is zero

    B)  A process that leads to increase in free energy will be spontaneous

    C)  A process accompanied by decrease in entropy will be non-spontaneous under normal conditions.

    D)  Enthalpy of combustion is always negative

    Correct Answer: B

    Solution :

     \[\Delta G\]gives a criteria for spontaneity at constant pressure and temperature. (I)If \[\Delta G\]is negative (< 0), the process is spontaneous. (II) If \[\Delta G\]is positive (> 0), the process is non-spontaneous.


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