First slide
2nd Law of Thermodynaimcs
Question

Enthalpy of vapourization of a liquid is 54.4 kJ/mole. Entropy of vapourization of liquid will be ( Boiling point of liquid = 2220 c )

Easy
Solution

Svap= HvapTb; Svap= 54.4×103  J mol-1495 K=109.9 J K-1 mol-1

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