Chemistryhard · Past Paper

In the contact process for making sulfuric acid, what is the catalyst used in the step: $2SO_2 + O_2 \rightleftharpoons 2SO_3$?

AIron
BManganese dioxide
CVanadium pentoxide
DNickel

✓ Correct Answer: C — Vanadium pentoxide

Vanadium pentoxide ($V_2O_5$) is the catalyst used to convert sulfur dioxide to sulfur trioxide efficiently.

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