JIPMER Jipmer Medical Solved Paper-1999

  • question_answer
    What will be the entropy change, if one mole of water at 373K is converted into steam? (latent heat of varporisation of water is \[4.07\times {{10}^{4}}J\,mo{{l}^{-1}}\])

    A)  \[10.91\,J{{K}^{-1}}\,mo{{l}^{-1}}\]

    B)  \[109.1\,J{{K}^{-1}}\,mo{{l}^{-1}}\]

    C)  \[2.07\,J{{K}^{-1}}\,mo{{l}^{-1}}\]

    D)  cannot be calculated

    Correct Answer: B

    Solution :

    The entropy-change \[(\Delta S)=\frac{q}{T}=\frac{4.07\times {{10}^{4}}J\,mo{{l}^{-1}}}{373\,K}\] \[=109.1\,J{{k}^{-1}}mo{{l}^{-1}}\]


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