The Standard Free Energy Change Associated with the Dissolution of Ammonium

question 20

Multiple Choice

The standard free energy change associated with the dissolution of ammonium nitrate in water is -6.73 kJ/mol at 298.15 K. NH₄NO₃(s) NH₄NO₃(aq)
Which of the following is the equilibrium constant for the reaction? (R = 8.314 J/K⋅mol)

• A) 1.9 × 10^-3
• B) 6.6 × 10^-2
• C) 1.0
• D) 15
• E) 5.2 × 10²

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