What are the conditions usually used for the conversion of sulfur dioxide to sulfur trioxide in the Contact process?
2SO2(g)+O2(g)⇌2SO3(g) 2\text{SO}_2(\text{g}) + \text{O}_2(\text{g}) \rightleftharpoons 2\text{SO}_3(\text{g}) 2SO2(g)+O2(g)⇌2SO3(g)450∘C450^\circ\text{C}450∘C, 200 atmospheres pressure, and an iron catalyst
450∘C450^\circ\text{C}450∘C, 2 atmospheres pressure, and a vanadium(V) oxide catalyst
200∘C200^\circ\text{C}200∘C, 450 atmospheres pressure, and an iron catalyst
450∘C450^\circ\text{C}450∘C, 2 atmospheres pressure, and a nickel catalyst
81 exam-style questions on OCR GCSE Chemistry Improving processes and products. Each one has a worked solution and a mark scheme showing where the marks go.