Ask your homework questions to teachers and professors, meet other students, and be entered to win $600 or an Xbox Series X 🎉Join our Discord! LP Numerade Educator ### Problem 77 Hard Difficulty # Lead can be prepared from galena [lead(II) sulfide] by first roasting the galena in oxygen gas to form lead(II) oxide and sulfur dioxide. Heating the metal oxide with more galena forms the molten metal and more sulfur dioxide.(a) Write a balanced equation for each step.(b) Write an overall balanced equation for the process.(c) How many metric tons of sulfur dioxide form for every metricton of lead obtained? ### Answer ## a)$2 \mathrm{PbS}(\mathrm{s})+3 \mathrm{O}_{2}(\mathrm{g}) \longrightarrow 2 \mathrm{PbO}(\mathrm{s})+2 \mathrm{SO}_{2}(\mathrm{g})2 \mathrm{PbO}(\mathrm{s})+\mathrm{PbS}(\mathrm{s}) \longrightarrow 2 \mathrm{Pb}(\mathrm{s})+\mathrm{SO}_{2}(\mathrm{g})$b)$\mathrm{PbS}(\mathrm{s})+\mathrm{O}_{2} \rightarrow \mathrm{Pb}(\mathrm{s})+\mathrm{SO}_{2}(\mathrm{g})$c)$\mathrm{m}\left(\mathrm{SO}_{2}\right)=309169,88 \mathrm{g}=0,309 \mathrm{t}\$

#### Topics

Chemical reactions and Stoichiometry

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##### Allea C.

University of Maryland - University College