Ammonium sulfate is employed as a fertiliser. It is produced from ammonia and sulfuric acid. Which words should fill gaps 1, 2 and 3? The ......1...... is produced by the ......2...... process in which ......3...... is used as a catalyst.
- A1 ammonia, 2 Contact, 3 iron
- B1 ammonia, 2 Haber, 3 vanadium(V) oxide
- C1 sulfuric acid, 2 Contact, 3 vanadium(V) oxide
- D1 sulfuric acid, 2 Haber, 3 iron