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

  • question_answer
    If \[900\,J/g\] of heat is exchanged at boiling point of water, then what is increase in entropy     [BHU 1998]

    A)                 43.4 J/mole        

    B)                 87.2 J/mole

    C)                 900 J/mole         

    D)                 Zero

    Correct Answer: A

    Solution :

              \[\Delta {{S}_{vap}}=\frac{(900\times 18)}{373}=43.4\,\,J{{K}^{-1}}\,mo{{l}^{-1}}\].


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