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Given the following data at 298 K:
CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics
Problem Given the following data at 298 K:
(i) S ( s ) + O 2 ( g ) → S O 2 ( g ) \mathrm{S(s)+O_2(g)\rightarrow SO_2(g)} S ( s ) + O 2 ( g ) → S O 2 ( g ) Δ S 298 ∘ = + 11.6 J mol − 1 K − 1 \Delta S^{\circ}_{298}=+11.6\;\text{J\,mol}^{-1}\,\text{K}^{-1} Δ S 298 ∘ = + 11.6 J mol − 1 K − 1
(ii) 2 S O 3 ( g ) → 2 S O 2 ( g ) + O 2 ( g ) \mathrm{2\,SO_3(g)\rightarrow 2\,SO_2(g)+O_2(g)} 2 S O 3 ( g ) → 2 S O 2 ( g ) + O 2 ( g ) Δ S 298 ∘ = + 257 J mol − 1 K − 1 \Delta S^{\circ}_{298}=+257\;\text{J\,mol}^{-1}\,\text{K}^{-1} Δ S 298 ∘ = + 257 J mol − 1 K − 1
Calculate Δ S 298 ∘ \Delta S^{\circ}_{298} Δ S 298 ∘ for the reaction 2 S ( s ) + 3 O 2 ( g ) → 2 S O 3 ( g ) \mathrm{2\,S(s)+3\,O_2(g)\rightarrow 2\,SO_3(g)} 2 S ( s ) + 3 O 2 ( g ) → 2 S O 3 ( g ) .
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