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The enthalpy change on freezing of 1 mol of water at 50C to ice at −50C is :

(Given fus H = 6 kJ mol−1 at 00C,

Cp (H 2O, l) = 75.3 J mol−1 K−1,

Cp (H2O, s) = 36.8 J mol−1 K−1)

  • Option 1)

     5.44 kJ mol−1

  • Option 2)

     5.81 kJ mol−1

  • Option 3)

     6.56 kJ mol−1

  • Option 4)

     6.00 kJ mol−1

     

 

Answers (2)

best_answer


Option 1)

 5.44 kJ mol−1

Option 2)

 5.81 kJ mol−1

Option 3)

 6.56 kJ mol−1

Option 4)

 6.00 kJ mol−1

 

Posted by

solutionqc

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Option 3 :

6.56 KJ. 

 

Posted by

Ruchika

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