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    Exam 10: Entropy and the Second Law of Thermodynamics
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    Calculate Δ S for the Reaction
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Calculate Δ S for the Reaction

Question 9

Question 9

Multiple Choice

Calculate Δ S for the reaction:
SO3( g ) + CaO( s ) → CaSO4( s )
Δ S in J/mol K for: CaO( s ) = 40, SO3( g ) = 256.6, CaSO4( s ) = 107


A) +404 J/K
B) − 190 J/K
C) − 323 J/K
D) +189 J/K

Correct Answer:

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