The invention relates to the field of inorganic chemistry and presents a new class of acids and their salts, in particular, a class of halogenoid acids with a general formula H.sub.mXO.sub.(V+m-n)/2Ha.sub.n, where X is a non-metal of group 4, 5 or 6 of the periodic table of elements, V is its valence in the compound, Ha is a halogen, which may find application in chemical treatment of materials, as a part of fertilizers or insecticides in agriculture, in medicine, etc. In particular, the object of the invention is a fluoro-nitric acid of the formula H.sub.2NO.sub.3F with the structural formula ##STR00001## In particular, the object of the invention is a chloro-nitric acid of the formula H.sub.2NO.sub.3Cl with the structural formula ##STR00002## In particular, the object of the invention is a sulfuro-chlorous acid of the formula H.sub.2SO.sub.3Cl.sub.2 with the structural formula ##STR00003##

The invention relates to the field of inorganic chemistry and presents a new class of acids and their salts, in particular, a class of halogenoid acids with a general formula H.sub.mXO.sub.(V+m-n)/2Ha.sub.n, where X is a non-metal of group 4, 5 or 6 of the periodic table of elements, V is its valence in the compound, Ha is a halogen, which may find application in chemical treatment of materials, as a part of fertilizers or insecticides in agriculture, in medicine, etc. In particular, the object of the invention is a fluoro-nitric acid of the formula H.sub.2NO.sub.3F with the structural formula ##STR00001## In particular, the object of the invention is a chloro-nitric acid of the formula H.sub.2NO.sub.3Cl with the structural formula ##STR00002## In particular, the object of the invention is a sulfuro-chlorous acid of the formula H.sub.2SO.sub.3Cl.sub.2 with the structural formula ##STR00003##

The present application provides a method of preparing sulfuryl fluoride, including the following steps of: S1) reacting sulfur trioxide steam with barium fluoride to acquire a mixed gas of barium sulphate and sulfuryl fluoride; S2) pickling the mixed gas acquired in step S1 with a concentrated sulfuric acid solution with a concentration of 70-98.3 wt. % to acquire a primary purified sulfuryl fluoride gas; S3) passing the primary purified sulfuryl fluoride gas acquired in step S2 through an aqueous solution with a concentration of 2-10 wt. % selected from at least one of the following: sodium sulfite, sodium bisulfite, sodium pyrosulfite, and sodium thiosulfate, to acquire a sulfuryl fluoride gas.

The invention relates to the field of inorganic chemistry and presents a new class of acids and their salts, in particular, a class of halogenoid acids with a general formula H.sub.mXO.sub.(v+mn)/2Ha.sub.n, where X is a non-metal of group 4, 5 or 6 of the periodic table of elements, V is its valence m the compound, Ha is a halogen, which may find application in chemical treatment of materials, as a part of fertilizers or insecticides in agriculture, in medicine, etc. In particular, the object of the invention is a fluoro-nitric acid of the formula H.sub.2NO.sub.3F with the structural formula

##STR00001##

In particular, the object of the invention is a chloro-nitric acid of the formula H.sub.2NO.sub.3Cl with the structural formula

##STR00002##

In particular, the object of the invention is a sulfuro-chlorous acid of the formula H.sub.2SO.sub.3Cl.sub.2 with the structural formula

##STR00003##

The invention relates to the field of inorganic chemistry and presents a new class of acids and their salts, in particular, a class of halogenoid acids with a general formula H.sub.mXO.sub.(v+mn)/2Ha.sub.n, where X is a non-metal of group 4, 5 or 6 of the periodic table of elements, V is its valence m the compound, Ha is a halogen, which may find application in chemical treatment of materials, as a part of fertilizers or insecticides in agriculture, in medicine, etc. In particular, the object of the invention is a fluoro-nitric acid of the formula H.sub.2NO.sub.3F with the structural formula

##STR00001##

In particular, the object of the invention is a chloro-nitric acid of the formula H.sub.2NO.sub.3Cl with the structural formula

##STR00002##

In particular, the object of the invention is a sulfuro-chlorous acid of the formula H.sub.2SO.sub.3Cl.sub.2 with the structural formula

##STR00003##

An integrated process for co-producing phosphorus pentafluoride (PF.sub.5) and fluorosulfonic acid (HSO.sub.3F) in high yield and purity via a single reaction step is provided. The method includes reacting a first reagent comprising an aqueous solution of hexafluorophosphoric acid (HPF.sub.6) and hydrofluoric acid (HF) with a second reagent comprising fuming sulfuric acid (H.sub.2SO.sub.4.Math.SO.sub.3) and recovering a product mixture comprising phosphorus pentafluoride (PF.sub.5) and fluorosulfonic acid (HSO.sub.3F).