Sulfur trioxide (SO3\text{SO}_3SO3) is produced industrially during the Contact process by reacting sulfur dioxide and oxygen under specific conditions of temperature and pressure in the presence of a vanadium(V) oxide catalyst according to the equilibrium reaction:
2SO2(g)+O2(g)⇌2SO3(g) 2\text{SO}_2(g) + \text{O}_2(g) \rightleftharpoons 2\text{SO}_3(g) 2SO2(g)+O2(g)⇌2SO3(g)Calculate the maximum amount, in moles, of sulfur trioxide that could be formed from 80 kg80\text{ kg}80 kg of oxygen, assuming all of the oxygen is converted into sulfur trioxide under theoretical conditions. (Take the relative atomic mass of O=16\text{O} = 16O=16.)
In practice, under actual reaction conditions, only 64%64\%64% of the oxygen is converted into sulfur trioxide. Calculate the actual amount, in moles, of sulfur trioxide formed from this reactant mixture.
80 exam-style questions on Edexcel IGCSE Chemistry Chemical formulae, equations and calculations. Each one has a worked solution and a mark scheme showing where the marks go.