Sulphuric acid has many applications, including in many chemical reactions and production precesses. In combination with nitric acid it form the nitronium ion, which is used in the nitration? of compounds. The process of nitration is used to manufacture a great many explosives, including Trinitrotoluene, [nitro glycerin]?, and gun cotton. It is also the acid used in lead-acid batteries?, and so is sometimes known as battery acid.
The energy of the hydration reaction with sulphuric is highly exothermic, and if water is added to concentrated sulphuric acid it can boil. Always add the acid to the water rather than the water to the acid. Because this reaction is so exothermic, it makes it favourable in thermodynamic terms. This means that sulphuric acid is an excellent dehydration agnet, and is used to prepare many dried fruits.