Spontaneous Reaction Video Lessons

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Problem: For the reaction 2 SO3(g) → 2 SO2(g) + O2(g) ∆H◦r = +198 kJ·mol−1 at 298 K. Which statement is true for this reaction? 1. The reaction will not be spontaneous at any temperature. 2. The reaction will not be spontaneous at high temperatures. 3. ∆G◦r will be negative at high temperatures.  4. ∆G◦r will be positive at high temperatures. 5. The reaction is driven by the enthalpy.

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Problem Details

For the reaction

2 SO3(g) → 2 SO2(g) + O2(g)

∆Hr = +198 kJ·mol−1 at 298 K. Which statement is true for this reaction?

1. The reaction will not be spontaneous at any temperature.

2. The reaction will not be spontaneous at high temperatures.

3. ∆Gr will be negative at high temperatures. 

4. ∆Gr will be positive at high temperatures.

5. The reaction is driven by the enthalpy.

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