The Standard Free Energy Change Associated with the Dissolution of Ammonium

question 32

Multiple Choice

The standard free energy change associated with the dissolution of ammonium nitrate in water is -6.73 kJ at 298 K. NH₄NO₃(s) ? NH₄NO₃(aq)
What is the equilibrium constant for the reaction? (R = 8.31 × 10?³ kJ/K)

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

---

Definitions:

Payroll Tax

A tax that an employer withholds and pays on behalf of its employees, based on the wage or salary of the employee.

Payroll Tax

Charges applied to both employers and employees, often determined as a percentage of the wages paid to employees.

Per Unit

A term used to express costs, prices, or other measurements on an individual basis, allowing for straightforward comparisons or calculations.

Payroll Tax

Assessments collected from employers or employees, typically proportional to the salaries that workers are paid.