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The entropy change associated with the conversion of 1kg of ice at 273 K to water vapours at 383 K is:
( Specific heat of water liquid and water vapour are ; heat of liquid fusion and vapourisation of water are
, respectively ). ( log 273 = 2.436 , log 373=2.572 , log 383 = 2.583)
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Entropy for phase transition at constant pressure -
- wherein
Transition
Fusion, Vaporisition, Sublimation
Entropy for solid and liquid -
or
- wherein
Phase change path
273 K 273 K 373 K 373 K 383 K
Option 1)

Option 3)
Option 4)