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NEET 2011 Chemistry question

ChemistryThermodynamicsNEET 2011

If the enthalpy change for the transition of liquid water to steam is at , the entropy change for the process would be :

Answer: (4)

Solution

For a phase change taking place reversibly at constant temperature and pressure, , so . With and 10^3$\ \text{J

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Question ID VK-090809