4. Construct a predominance area diagram for the Ni-S-O system at \( 1100 \mathrm{~K} \) using \( \log \mathrm{P}_{\mathrm{SO}_{2}} \) as the ordinate and \( \log \mathrm{P}_{\mathrm{O}_{2}} \) as the abscissa. \( \begin{array}{ccc}\text { Reaction } & & \log \mathrm{K}(1100 \mathrm{~K}) \\ 0.5 \mathrm{~S}_{2}+\mathrm{O}_{2} & \rightarrow \mathrm{SO}_{2} & 13.38 \\ \mathrm{SO}_{2}+0.5 \mathrm{O}_{2} & \rightarrow \mathrm{SO}_{3} & -0.19 \\ \mathrm{Ni}+0.5 \mathrm{O}_{2} & \rightarrow \mathrm{NiO} & 6.54 \\ 2 \mathrm{Ni}+\mathrm{S}_{2} & \rightarrow 2 \mathrm{NiS} & 6.38 \\ 3 \mathrm{Ni}+\mathrm{S}_{2} & \rightarrow \mathrm{Ni}_{3} \mathrm{~S}_{2} & 7.22 \\ \mathrm{NiO}+\mathrm{SO}_{3} & \rightarrow \mathrm{NiSO}_{4} & 1.38\end{array} \)
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In the Ni-S-O system, we have the following species: Ni (solid), NiO (solid), S (solid), SO2 (gas), and O2 (gas). The relevant reactions are: Show more…
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