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Problem: For the reaction 2 SO3(g) → 2 SO2(g) + O2(g) ∆H◦r = +198 kJ · mol−1 and ∆S◦r = 190 J · K−1 · mol−1 at 298 K. The forward reaction will be spontaneous at 1. temperatures above 1042 K.  2. temperatures below 1042 K. 3. all temperatures. 4. no temperature. 5. temperatures above 1315 K.

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Problem Details

For the reaction

2 SO3(g) → 2 SO2(g) + O2(g)

∆Hr = +198 kJ · mol−1 and ∆Sr = 190 J · K−1 · mol−1 at 298 K. The forward reaction will be spontaneous at

1. temperatures above 1042 K. 

2. temperatures below 1042 K.

3. all temperatures.

4. no temperature.

5. temperatures above 1315 K.

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