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AP Chemistry 9.5 A Explain Whether a Process Is Thermodynamically Favored Using the Relationships Between K Go and T Questions

Practice AP Chemistry questions on relating ΔG°, K, and temperature to product or reactant favorability and equilibrium values.

Syllabus
Effective Fall 2025
Course
AP Chemistry

Exam points

  • Relate the sign of ΔG° to whether products or reactants are favored and whether K is above or below 1.
  • Use ΔG° = −RT ln K or K = e^(−ΔG°/RT) to calculate or interpret equilibrium constants.

AP Chemistry 9.5 A Explain Whether a Process Is Thermodynamically Favored Using the Relationships Between K Go and T Questions question 1

[Maximum number: 1]

A student investigates the reactions of nitrogen oxides. One of the reactions in the investigation requires an equimolar mixture of NO(g) and NO2(g)\mathrm{NO}_{2}(g), which the student produces by using the reaction represented above.

The student begins with an equimolar mixture of NO(g) and NO2(g)\mathrm{NO}_{2}(g) in a rigid reaction vessel and the mixture reaches equilibrium at 298 K.

Calculate the value of the equilibrium constant, K, for the reaction at 298 K.

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