[nearly.alex]

i may of posted in the wrong sub forum, but this involves the contact process so i thought it was best suited here. during the production of suphuric acid SO_{3 (g)} + H₂SO_{4 (l)} ==========>  H₂S₂O_{7 (l)}

i was wondering what would the structure of oleum would be? i have guessed either the crude drawing attached i made in paint or bonded by association. any help would be much appreciated.

[Mitch]

Type oleum into the chemfinder block to your lower left.

[Donaldson Tan]

oleum is a mixture of concentrated sulphuric acid and sulphur trioxide.

this is still essentially an inorganic chemistry thread.

in order to qualify this thread to be chemical engineering, the emphasis must be on how the chemical reaction is carried out. Chemical engineering is about extracting as much as possible product from the reaction using as little input as possible.

[AWK]

oleum is a mixture of concentrated sulphuric acid and sulphur trioxide.

to be precise - anhydrous!
Though H2S2O7 is known

[Paradoxtom]

[Paradoxtom]

to be precise - anhydrous!
Though H2S2O7 is known

Bonds??



Oleum = H₂S₂O₇ + H₂S₃O₁₀

(H₂SO₄)+ (SO₃) --> (H₂S₂O₇)

[AWK]

My picture comes from crystallographic database (the code number of ICSD is shown as the name of the picture) and show only sequence of atoms ( and real conformation in crystal).
I do hope that everyone that looks at this picture can count  electrons and transform this picture to a canonical Lewis structure.