… Sulphuric acid; oleum. …
Explanatory notes
… 28.07 ‑ Sulphuric acid; oleum. (A) SULPHURIC ACID Sulphuric acid (H 2 SO 4 ) is … by passing oxygen and sulphur dioxide over a catalyst (platinum, ferric oxide, vanadium pentoxide, etc.). It is freed from impurities …