How is sulphuric acid produced?
Sulphuric acid is produced by two major process industrially. 1. The contact and absorption process a.single contact single absorption process. b.double contact double absorption process. 2.The chamber process In the contact process, sulphur is burned in a furnace to produce sulphur dioxide which is then converted in to sulphur trioxide using catalyst converter. The catalyst is normally vanadium pentoxide. This sulphur trioxide gets absorbed in a absorption tower when it comes in contact with x% of sulphuric acid. x% contains some y% of water,this absorbs the sulphur trioxide to produce sulphuric acid. The equations are: Combustion process: S + O2 ---> SO2 (over V2O5) Conversion process: SO2 + 1/2 O2 ---> SO3 Absorption process: SO3 + H2O ---> H2SO4