The Enthalpy and Entropy of Vaporization of Ammonia at Its $\degree$

question 28

Multiple Choice

The enthalpy and entropy of vaporization of ammonia at its normal boiling point, -33.34 $\degree$ C, are approximately 23.35 kJ/mol and 97.4 J/mol . K, respectively.What would the entropy change of the universe be if one mole of ammonia vapor were to condense in a large room maintained at 30.0 $\degree$ C?

• A)(+20.4 J/K)
• B)(+77.0 J/K)
• C)(-174.4 J/K)
• D)(-20.4 J/K)
• E)(+174.4 J/K)

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