Så det er ikke farlig å lede SO3 gjennom vann?
EDIT: Må vannet i så fall være i gassform?
Sulfuric acid is produced from sulfur, oxygen and water via the contact process.
In the first step, sulfur is burned to produce sulfur dioxide.
(1) S(s) + O2(g) → SO2(g)
This is then oxidized to sulfur trioxide using oxygen in the presence of a vanadium(V) oxide catalyst.
(2) 2 SO2 + O2(g) → 2 SO3(g) (in presence of V2O5)
The sulfur trioxide is absorbed into 97-98% H2SO4 to form oleum (H2S2O7), also known as fuming sulfuric acid. The oleum is then diluted with water to form concentrated sulfuric acid.
(3) H2SO4(l) + SO3 → H2S2O7(l)
(4) H2S2O7(l) + H2O(l) → 2 H2SO4(l)
Note that directly dissolving SO3 in water is not practical due to the highly exothermic nature of the reaction between sulfur trioxide and water. The reaction forms a corrosive aerosol that is very difficult to separate, instead of a liquid.
(5) SO3(g) + H2O(l) → H2SO4(l)
Det går nok ikke å lede SO3 gjennom vann
Sist endret av looperjohn; 17. februar 2009 kl. 18:18.
Grunn: Automatisk sammenslåing med etterfølgende innlegg.