Chemical Thermodynamics Question 409

Question: 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 $ 6.0kJmo{{l}^{-1}} $ at $ 0{}^\circ C $ )

Options:

A) 21.98

B) 20.13

C) 2.013

D) 2.198

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Answer:

Correct Answer: A

Solution:

  • $ \Delta S(per,mole)=\frac{\Delta Hpermole}{T}=\frac{6000}{273} $

$ =21.98,J{{K}^{-1}}~mo{{l}^{-1}} $



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