<Dd> 2 SO 2 + O 2 → 2 SO 3 (− 99 kJ / mol) (reaction is reversible) </Dd> <P> The sulfur trioxide is hydrated into sulfuric acid H 2SO 4: </P> <Dl> <Dd> SO 3 + H 2O → H 2SO 4 (g) (− 101 kJ / mol) </Dd> </Dl> <Dd> SO 3 + H 2O → H 2SO 4 (g) (− 101 kJ / mol) </Dd>

Describe the properties of dilute sulfuric acid as a typical acid