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JEE Main & Advanced Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank 2nd and 3rd law of thermodynamics and Entropy

  • question_answer
    Which of the following is true for the reaction \[{{H}_{2}}O(l)\]⇌\[{{H}_{2}}O(g)\] at \[{{100}^{o}}C\] and 1 atmosphere [KCET 1991; AIIMS 1996]

    A)                 \[\Delta E=0\]   

    B)                 \[\Delta H=0\]

    C)                 \[\Delta H=\Delta E\]    

    D)                 \[\Delta H=T\Delta S\]

    Correct Answer: D

    Solution :

           At equilibrium, \[\Delta G\] = 0                                 Hence   0 = \[\Delta H-T\Delta S\] or \[\Delta H=T\Delta S\].


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