Exercise 17.38: Problems by Topic Entropy, the Second Law of Thermodynamics, and

Question

Exercise 17.38: Problems by Topic Entropy, the Second Law of Thermodynamics, and the Direction of Spontaneous Change Given the values of AHraH, AS m. and T below, determine AS Part A A Ho 83kJ ASrxm 147 J/K, T 298K Express your answer using two significant figures. reset shortcuts help J/K AS Submit My Answers Give Up Part B Express your answer using one significant figure reset shortcuts help J/K AS Submit My Answers Give Up Part C 147 J/K, T 298K Express your answer using two significant figures. reset shortcuts help J/K AS My Answers Give Up Submit

Explanation / Answer

Suni = Ssystem + Ssurrounding

Ssystem is given

& Ssurrounding = -H/T

hence Suni = Ssystem - H/T

using these eqns we get

a) Suni = -131.52J/K

b)Suni = 36.48 J/K

c) Suni = -425.42J/K

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