R-HgSO4H + SO3 ——> RSO3H + HgSO4. Which type of reaction is the following?
(a) Substitution reaction
(b) Replacement reaction
(c) Addition reaction
(d) None of the mentioned
This question was posed to me by my college director while I was bunking the class.
This intriguing question comes from Catalyst and Sulfonating Agents in chapter Sulfonation and Sulfation of Unit Processes