It is important in this practical to: The acid and solid need to be chosen. Use hydrochloric acid to make a chloride, sulfuric acid to make a sulfate, and nitric acid to make a nitrate.

The reaction is essentially an acid-catalysed chlorination of sulfur trioxide by hydrogen chloride (Scheme 1). Scheme 1 Generally, in agreement with this scheme, the reagent may be prepared by the ...