Thermodynamics Question 299

Question: When 1 kg of ice at 0C melts to water at 0C, the resulting change in its entropy, taking latent heat of ice to be 80 cal/C , is

Options:

A) 273 cal/K

B) 253 cal/K

C) 263 cal/K

D) 293 cal/K

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Answer:

Correct Answer: D

Solution:

[d] Change in entropy is given by dS=dQT or ΔS=ΔQT=mLf273

ΔS=1000×80273=293 cal/K.



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