The Contact Process is used to manufacture highly concentrated sulfuric acid. Which transition metal — d and f Block Elements Chemistry Question
Question
The Contact Process is used to manufacture highly concentrated sulfuric acid. Which transition metal oxide is universally employed as the catalyst for the oxidation of $SO_2$ to $SO_3$?
Answer: C
💡 Solution & Explanation
Vanadium(V) oxide ($V_2O_5$) is the specific heterogeneous catalyst used in the Contact Process. It operates by temporarily shifting between its $+5$ and $+4$ oxidation states to hand off oxygen to sulfur dioxide.
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