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

question 147

Multiple Choice

The enthalpy and entropy of vaporization of ammonia at its normal boiling point,-33.34 ^$\circ$ 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 ^$\circ$ C? Assume the final temperature of the ammonia gas is -33.34 ^$\circ$ 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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Definitions:

Surplus

The amount by which the supply of a product exceeds its demand, often leading to lower prices.

Market For Butter

The economic platform where buyers and sellers engage in the exchange of butter, determining its price and quantity available.

Price Floor

A government or group-imposed price control that sets the minimum allowed price above the equilibrium price, potentially leading to surpluses.

Inefficiency

A situation where resources are not used in the most effective way, leading to waste or a loss of potential utility.