sulphur trioxide
Britishnoun
Example Sentences
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The product of this reaction is sulphuric acid, so that sulphur trioxide is the anhydride of that acid: SO3 + H2O = H2SO4.
From An Elementary Study of Chemistry by McPherson, William
The acid commonly used is made by the "contact" process, in which sulphur dioxide is oxidized to sulphur trioxide, and then, with the addition of water, changed to sulphuric acid.
From The Automobile Storage Battery Its Care And Repair by Witte, Otto A.
The olefines—ethylene, &c.—are generally absorbed by a very strong sulphuric acid prepared by adding sulphur trioxide to sulphuric acid to form a mixture which solidifies when slightly cooled.
From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" by Various
Union takes place at once, and the strongly fuming sulphur trioxide escapes from the jet at the end of the tube, and may be condensed by surrounding the receiving tube with a freezing mixture.
From An Elementary Study of Chemistry by McPherson, William
Such oxides as sulphur trioxide, nitrogen pentoxide, etc., do not possess acid properties except in combination with water.
From Heroes of Science Chemists by Muir, M. M. Pattison (Matthew Moncrieff Pattison)
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
