Linked from

The 7 pages that link to Sulfur trioxide, each with the reason it gives.

• Sulfuric acidRelated: Absorption of this oxide into water forms sulfuric acid.

• Sulfur dioxideCompared with: Adding one oxygen atom changes SO₂ into the more reactive SO₃.

• Contact processRelated: It is the immediate product of oxidation and the precursor absorbed to make acid.

• SulfonationRelated: It is the principal electrophile in many aromatic sulfonation mixtures.

• Fluorosulfuric acidRelated: It reacts with hydrogen fluoride in a standard preparation of fluorosulfuric acid.

• Acid anhydrideBroader topic: It is a classic example: hydration produces the corresponding oxoacid.

• Chlorosulfuric acidRelated: Its strong sulfonating behavior is related to sulfur trioxide chemistry.