Question

Give any four uses of sulphuric acid.

Answer 1

1. Preparation of various chemical compounds: This acid is widely utilised to manufacture other essential acids, including hydrochloric, nitric, and phosphoric acids. Additionally, it helps in generating gases like carbon monoxide and sulphur dioxide, as well as preparing various sulphate salts.
2. Metallurgy: It is used during metal extraction to convert ores into sulphates for electrolysis. It also performs ‘pickling’, which involves cleaning iron, copper, and steel surfaces before zinc or tin coating (galvanisation) to stop rust and oxidation.
3. Lead batteries: Sulphuric acid serves as the crucial electrolyte inside lead-acid storage batteries. Its chemical reaction with lead releases the necessary electrons, which allows the battery to generate and maintain electrical voltage.
4. Fertilisers: Sulphuric acid is key for manufacturing agricultural boosters like superphosphate and ammonium sulphate. It is also an essential component in creating everyday household cleaners, such as soaps, laundry detergents, and dishwashers.
5. Explosives: This chemical is critical for synthesising powerful explosives like T.N.T. and Tri-nitro glycerin, which are core ingredients in dynamite. It is also used to produce picric acid for manufacturing commercial explosives and match sticks.