Atom Economy
3 past-paper questions on Atom Economy · examined 2018–2023.
20231 question
Sulfur dioxide is required for the production of sulfuric acid. Sulfur dioxide can be obtained by heating copper sulfide, Cu2S, in excess air. Cu2S + O2 → 2Cu + SO2 Calculate the atom economy for the production of sulfur dioxide, SO2, in this reaction. (relative atomic mass: Cu = 63.5 relative formula masses: O2 = 32.0, Cu2S = 159.0, SO2 = 64.0) Give your answer to two significant figures.
20182 questions
The atom economy for the reaction in (i) is 100%. State how the equation shows that the atom economy is 100%.
Lead can be obtained by heating its oxide with carbon. The balanced equation for the reaction is 2PbO + C o 2Pb + CO2 Calculate the atom economy for the production of lead in this reaction. (relative atomic masses: C = 12, O = 16, Pb = 207 relative formula masses: PbO = 223, CO2 = 44) Give your answer to two significant figures.
Go Pro to download this chapter as a topical PDF and search by AI.
Don't just read the solution — get your own answer marked
Write your answer to any Chemistry past-paper question, photograph it, and Learning DEN marks it like a real examiner — marks awarded, where you lost them, and your predicted grade. 3 free gradings to start.