shown below. XII XII - - - - H SO H O + SO + (O) nascent oxygen Sulphuric acid oxidises elements such as carbon, sulphur and phosphorus. It also oxidises bromide and iodide to bromine and iodine respectively. C + 2H SO 2SO + 2H O + CO S + 2H SO 3SO + 2H P + 10H SO 4H PO + 10SO + 4H O H S + H SO S O + 2H O + S H SO + 2HI SO + 2H O + I H SO + 2HBr SO + 2H O + Br Reaction with metals: Sulphuric acid reacts with metals and gives different product depending on the reactants and reacting condition.
Dilute sulphuric acid reacts with metals like tin, aluminium, zinc to give corresponding sulphates. Zn + H SO ZnSO + H 2Al + 3H SO Al (SO ) + ↑ H ↑ Hot concentrated sulphuric acid reacts with copper and lead to give the respective sulphates as shown below. Cu + 2H SO CuSO + 2H O + SO ↑ Pb + 2H SO PbSO + 2H O + SO ↑ Sulphuric acid doesn’t react with noble metals like gold, silver and platinum. Reaction with salts: It reacts with different metal salts to give metal sulphates and bisulphates.
KCl + H SO KHSO + HCl KNO + H SO KHSO + HNO Na CO + H SO Na SO + H O + CO 2NaBr + 3H SO 2NaHSO + 2H O + Br + SO Reaction with organic compounds: It reacts organic compounds such as benzene to give sulphonic acids. C H + H SO C H SO H + Benzene Benzene sulphonic acid HH O Uses of sulphuric acid: . Sulphuric acid is used in the manufacture of fertilisers, ammonium sulphate and super phosphates and other chemicals such as hydrochloric acid, nitric acid etc... .
It is used as a drying agent and also used in the preparation of pigments, explosives etc.. XII XII - -