Question

Oxidation that leads to formation of sulphuric acid is catalysed by:

• A. ozone
• B. hydrogen peroxide
• C. oxygen
• D. All of the above

Answer 1

Answer: (D)

All of the above

There are a large number of aqueous reactions that oxidize sulfur from $S\left(IV\right)$ to $S\left(VI\right)$ leading to the formation of sulfuric acid. The most important oxidation reactions are with ozone, hydrogen peroxide and oxygen (reactions with oxygen are catalyzed by iron and manganese in the cloud droplets).