Sulphuric acid is a strong mineral acid (one of the strongest), as it typically produces more than one mole of hydrogen ions in solution per mole of acid.
This is because is dissociates (splits up) in two stages in water. In the first equilibrium reaction, one hydrated
Sulphuric acid is so strong that it is able to force nitric acid to act as a base. This reaction is used in organic chemistry to nitrate especially aromatic compounds.
Sulphuric acid is extremely useful industrially and is made by the Contact process where sulphur is first burned in air to produce sulphur dioxide which is then further reacted with oxygen in the presence of a vanadium pentoxide catalyst to produce sulphur trioxide. This is then dissolved in concentrated sulphuric acid to make a thick oily substance called oleum (