Ammonium sulfate deposits have been found in places with severe atmospheric pollution. It is thought that they form via the reaction shown below. $\text{SO}_3 + \text{H}_2\text{O} + \text{2NH}_3 \rightarrow (\text{NH}_4)_2\text{SO}_4$. Which process does not take place in this reaction?
- Aacid/base neutralisation
- Bdative bond formation
- Cionic bond formation
- Doxidation/reduction