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NEET Sample Paper NEET Sample Test Paper-38

  • question_answer
    What is the entropy change \[(in\,J{{K}^{-1}}\,mo{{l}^{-1}})\] when one mole of ice is converted into water at \[0{}^\circ C\]? (The enthalpy change for the conversion of ice to liquid water is\[6.0\,kJ\,mo{{l}^{-1}}\] at \[0{}^\circ C\])

    A)  20.13        

    B)  2.013

    C)  2.198        

    D)  21.98

    Correct Answer: D

    Solution :

     \[\Delta D=\frac{\Delta {{H}_{f}}}{T}=\frac{6.0}{273}=0.02198\,kJ\,{{K}^{-1}}\,mo{{l}^{-}}\] \[=0.02198\times 1000\,J{{K}^{-1}}\,mo{{l}^{-1}}\] \[=21.98\,J{{K}^{-1}}\,mo{{l}^{-1}}.\]


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