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(A) The Contact Process is the industrial method used to produce sulfuric acid $(H_2SO_4)$.In this process,the primary raw material used is elemental

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Sulfur

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(A) The Contact Process is the industrial method used to produce sulfuric acid $(H_2SO_4)$.In this process,the primary raw material used is elemental sulfur $(S)$.First,sulfur is burned in air to produce sulfur dioxide $(SO_2)$: $S(s) + O_2(g) \rightarrow SO_2(g)$.Then,$SO_2$ is oxidized to sulfur trioxide $(SO_3)$ in the presence of a catalyst $(V_2O_5)$,which is subsequently absorbed in concentrated sulfuric acid to form oleum $(H_2S_2O_7)$,and finally diluted to obtain sulfuric acid.

What is the basic raw material used in the Contact Process for the production of sulfuric acid?

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