SSC JE Mechanical Engineering 2014 Set 2 Paper

Question : 152 of 200

Marks: +1, -0

The latent heat of evaporation of water at 100°C is 2560 kJ/kg. What is the change of entropy associated with the evaporation?

Solution:

Change in entropy

∆ _s=h_\fg/T=2560/373=6.86

KJ/kg K

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