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

question 124

Multiple Choice

The enthalpy and entropy of vaporization of ammonia at its normal boiling point, -33.34 $\degree$ C, are 23.35 kJ/mol and 97.4 J/mol . K, respectively.What is the entropy change of the universe when one mole of liquid ammonia vaporizes in a large room maintained at 34.0 $\degree$ C? Assume the final temperature of the ammonia gas is -33.34 $\degree$ C.

• A)(+21.4 J/K)
• B)(-76.0 J/K)
• C)(+74.1 J/K)
• D)(-21.4 J/K)
• E)(+76.0 J/K)

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