Question

Which are spontaneous at high temperatures? Choose one or more: \[ \begin{array}{c} 2 \mathrm{H}_{2} \mathrm{~S}(\mathrm{~g})+3 \mathrm{O}_{2}(\mathrm{~g}) \longrightarrow 2 \mathrm{H}_{2} \mathrm{O}(\mathrm{g})+\mathrm{SO}_{2}(\mathrm{~g}) \\ \Delta \mathrm{H}_{\mathrm{rxn}}^{\circ}=-1037 \mathrm{~kJ}, \Delta \mathrm{S}_{\mathrm{rxn}}^{\circ}=-152.4 \mathrm{~J} / \mathrm{K} \end{array} \] \[ \begin{array}{l} 2 \mathrm{SO}_{2}(g)+\mathrm{O}_{2}(g) \longrightarrow 2 \mathrm{SO}_{3}(g) \\ \Delta \mathrm{H}_{\mathrm{rxn}}^{\circ}=-197.8 \mathrm{~kJ}, \Delta \mathrm{S}_{\mathrm{rxn}}^{\circ}=-187.8 \mathrm{~J} / \mathrm{K} \end{array} \] \[ \begin{array}{l} \mathrm{SO}_{3}(\mathrm{~g})+\mathrm{H}_{2} \mathrm{O}(l) \longrightarrow \mathrm{H}_{2} \mathrm{SO}_{4}(l) \\ \Delta \mathrm{H}_{\mathrm{rxn}}^{\circ}=-132.5 \mathrm{~kJ}, \Delta \mathrm{S}_{\mathrm{rxn}}^{\circ}=-169.9 \mathrm{~J} / \mathrm{K} \end{array} \] \[ \begin{array}{l} \mathrm{S}(\mathrm{g})+\mathrm{O}_{2}(\mathrm{~g}) \longrightarrow \mathrm{H}_{\mathrm{r} \times \mathrm{n}} \mathrm{SO}_{2}(\mathrm{~g}) \\ \Delta \mathrm{H}^{\circ}=-574.0 \mathrm{~kJ}, \Delta \mathrm{S}_{\mathrm{rxn}}^{\circ}=-124.6 \mathrm{~J} / \mathrm{K} \end{array} \] none of the above

          Which are spontaneous at high temperatures?
Choose one or more:
\[
\begin{array}{c}
2 \mathrm{H}_{2} \mathrm{~S}(\mathrm{~g})+3 \mathrm{O}_{2}(\mathrm{~g}) \longrightarrow 2 \mathrm{H}_{2} \mathrm{O}(\mathrm{g})+\mathrm{SO}_{2}(\mathrm{~g}) \\
\Delta \mathrm{H}_{\mathrm{rxn}}^{\circ}=-1037 \mathrm{~kJ}, \Delta \mathrm{S}_{\mathrm{rxn}}^{\circ}=-152.4 \mathrm{~J} / \mathrm{K}
\end{array}
\]
\[
\begin{array}{l} 
2 \mathrm{SO}_{2}(g)+\mathrm{O}_{2}(g) \longrightarrow 2 \mathrm{SO}_{3}(g) \\
\Delta \mathrm{H}_{\mathrm{rxn}}^{\circ}=-197.8 \mathrm{~kJ}, \Delta \mathrm{S}_{\mathrm{rxn}}^{\circ}=-187.8 \mathrm{~J} / \mathrm{K}
\end{array}
\]
\[
\begin{array}{l}
\mathrm{SO}_{3}(\mathrm{~g})+\mathrm{H}_{2} \mathrm{O}(l) \longrightarrow \mathrm{H}_{2} \mathrm{SO}_{4}(l) \\
\Delta \mathrm{H}_{\mathrm{rxn}}^{\circ}=-132.5 \mathrm{~kJ}, \Delta \mathrm{S}_{\mathrm{rxn}}^{\circ}=-169.9 \mathrm{~J} / \mathrm{K}
\end{array}
\]
\[
\begin{array}{l}
\mathrm{S}(\mathrm{g})+\mathrm{O}_{2}(\mathrm{~g}) \longrightarrow \mathrm{H}_{\mathrm{r} \times \mathrm{n}} \mathrm{SO}_{2}(\mathrm{~g}) \\
\Delta \mathrm{H}^{\circ}=-574.0 \mathrm{~kJ}, \Delta \mathrm{S}_{\mathrm{rxn}}^{\circ}=-124.6 \mathrm{~J} / \mathrm{K}
\end{array}
\]
none of the above

Which are spontaneous at high temperatures?
Choose one or more:

2 H2 S( g)+3 O2( g) ⟶ 2 H2O(g)+SO2( g)
ΔHrxn^∘=-1037 kJ, ΔSrxn^∘=-152.4 J / K

2 SO2(g)+O2(g) ⟶ 2 SO3(g)
ΔHrxn^∘=-197.8 kJ, ΔSrxn^∘=-187.8 J / K

SO3( g)+H2O(l) ⟶H2SO4(l)
ΔHrxn^∘=-132.5 kJ, ΔSrxn^∘=-169.9 J / K

S(g)+O2( g) ⟶Hr×nSO2( g)
ΔH^∘=-574.0 kJ, ΔSrxn^∘=-124.6 J / K

none of the above

Added by Precious C.

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