The table below shows standard entropies, S⊖S^\ominusS⊖, for three gases.
| Substance | SO2(g)\text{SO}_2(\text{g})SO2(g) | O2(g)\text{O}_2(\text{g})O2(g) | SO3(g)\text{SO}_3(\text{g})SO3(g) |
|---|---|---|---|
| S⊖S^\ominusS⊖ / J mol−1K−1\text{J mol}^{-1}\text{K}^{-1}J mol−1K−1 | 248.1 | 205.0 | 256.6 |
What is the standard entropy change, ΔS⊖\Delta S^\ominusΔS⊖, in J mol−1K−1\text{J mol}^{-1}\text{K}^{-1}J mol−1K−1, for the following reaction?
2SO2(g)+O2(g)→2SO3(g) 2\text{SO}_2(\text{g}) + \text{O}_2(\text{g}) \rightarrow 2\text{SO}_3(\text{g}) 2SO2(g)+O2(g)→2SO3(g)+60.1+60.1+60.1
−188.0-188.0−188.0
−196.5-196.5−196.5
+188.0+188.0+188.0
