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AMU Medical AMU Solved Paper-1999

  • question_answer
    If the melting point of ice is\[0{}^\circ C\]and latent heat of fusion is\[5.46\text{ }kJ\text{ }mo{{l}^{-1}}\], the entropy change for the conversion of 18 g of ice to water at one atmosphere is

    A)  \[5.46\text{ }J{{K}^{-1}}\]        

    B)  \[20\text{ }J{{K}^{-1}}\]

    C)  \[50\text{ }J{{K}^{-1}}\]          

    D)  \[\text{360 }J{{K}^{-1}}\]

    Correct Answer: B

    Solution :

    : \[\Delta S=\frac{\Delta H}{T}=\frac{5.46}{273}=0.2\,kJ\,{{K}^{-1}}mo{{l}^{-1}}\] \[=20J\,{{K}^{-1}}mo{{l}^{-1}}\].


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