Zinc oxide is the desired product in this reaction.
2ZnS(s)+3O2(g)→2ZnO(s)+2SO2(g)2\mathrm{ZnS(s)}+3\mathrm{O_2(g)}\rightarrow2\mathrm{ZnO(s)}+2\mathrm{SO_2(g)}2ZnS(s)+3O2(g)→2ZnO(s)+2SO2(g)
| Element | Zn | S | O |
|---|---|---|---|
| Relative atomic mass, ArA_rAr | 65 | 32 | 16 |
The reactants in a batch are in the exact reacting ratio shown by the equation. All the reactants react and no products are lost.
| Reactant | Mass in the batch in kg |
|---|---|
| Zinc sulfide | 388 |
| Oxygen | 192 |
Calculate the percentage atom economy for making zinc oxide.
Calculate the total mass of sulfur dioxide formed in the batch.
104 exam-style questions on AQA GCSE Chemistry 3.3 Yield and atom economy of chemical reactions, covering 3.3.1a Percentage yield, 3.3.1b Theoretical mass of a product, 3.3.2a Atom economy, and 3.3.2b Choosing a reaction pathway. Each one has a worked solution and a mark scheme showing where the marks go.