Note 189 — Chapter IX
Reading edition
Sulphuric acid may be freed from arsenic or antimony by treating it with a few small fragments of charcoal and a little rock salt, and boiling till the hydrochloric and sulphurous acids have been expelled.
Reading edition
Sulphuric acid may be freed from arsenic or antimony by treating it with a few small fragments of charcoal and a little rock salt, and boiling till the hydrochloric and sulphurous acids have been expelled.