ME2121 – Engineering Thermodynamics

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Answer No, as for ANY spontaneous process, even in this case the entropy of the universe increases! Why Solidification of water is an exothermic process with heat of fusion of -6.88 kJ/mol. Hence the system (water) passes heat to the surroundings. Thus entropy change of system decreases, entropy of surrounding increases, thus change of entropy of the universe is positive. © Copyright 2005 Prof. Arun S. Mujumdar. ME2121 - Entropy I - Introduction (ASM) 8
Entropy of Crystalline Substance The entropy of a crystalline substance at equilibrium approaches zero as absolute zero of temperature is approached. This is an outcome of the Third Law of Thermodynamics © Copyright 2005 Prof. Arun S. Mujumdar. ME2121 - Entropy I - Introduction (ASM) 9
Page 1 and 2: ME2121 - Engineering Thermodynamics
Page 3 and 4: Review Chapter 5-2 nd Law Concepts/
Page 5 and 6: Direction of Energy Conversion •
Page 7: Entropy and Disorder • The Entrop
Page 11 and 12: INTRODUCTION (Cont’d) We start wi
Page 13 and 14: Clausius Inequality (Cont’d) Clau
Page 15 and 16: Brief Review: Reversibilities etc R
Page 17 and 18: Clausius Inequality (Cont’d) To d
Page 19 and 20: Clausius Inequality (Cont’d) The
Page 21 and 22: Clausius Inequality (Cont’d) Q T
Page 23 and 24: Clausius Inequality (Cont’d) It t
Page 25 and 26: Clausius Inequality (Cont’d) Ther
Page 27 and 28: Entropy (Cont’d) The term entropy
Page 29 and 30: Entropy (Cont’d) Note that entrop
Page 31 and 32: Internally Reversible Isothermal He
Page 33 and 34: Internally Reversible Isothermal He
Page 35: Closure Study chapter 6 of textbook

ME2121 – Engineering Thermodynamics

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