Tetrathionic acid

Tetra-thionsaure, /. tetrathionic acid, -vana-dlnsaure, /. tetravanadic acid. [Pg.444]

Tetrathionic Acid, H2S4Oe.—Formation.—(l) From Thiosulphates As is well known, sodium tetrathionate is produced by the interaction of sodium thiosulphate and iodine ... [Pg.213]

The observation that in the electrolysis of ammonium thiosulphate solution tetrathionic acid is formed at the anode also belongs to this class, because the process is not one of the coupling of discharged anions, but an anodic oxidation of the thiosulphate.11... [Pg.214]

Tetrathionic acid is present in the mixture obtained by the action of sulphur dioxide on hydrogen sulphide in aqueous solution (see Wackenroder s solution, p. 220). [Pg.215]

Pentathionic acid solution-when treated with lead dioxide2 or when merely allowed to undergo spontaneous decomposition, yields tetrathionic acid. [Pg.215]

From the strongly acid taste, the heat of neutralisation with dilute sodium hydroxide 3 and the electrical conductivity of the solution,4 it appears that tetrathionic acid is a fairly strong acid,5 comparable with dithionic acid in this respect. The heat of formation6 is given by the equation ... [Pg.215]

Sulphur dioxide abstracts sulphur from aqueous tetrathionic acid giving trithionic acid, the sulphur remaining in the solution and converting part of the tetrathionic acid into pentathionic acid, so that the final solution contains all three acids.11... [Pg.215]

Freshly precipitated lead sulphide also induces the decomposition of tetrathionic acid. [Pg.216]

Pentathionic Acid, HaS508.—This is present in Wackenroder s solution 1 (p. 220), and can be separated by removing the sulphuric acid by treatment with a little barium carbonate, the remaining acid liquid after filtration being capable of concentration to a specific gravity of 1-3 by evaporation on a water-bath and to 1-6 by evaporation in a vacuum at the ordinary temperature.2 The solution contains also tetrathionic acid, which may be eliminated by the method described on p. 219. [Pg.217]

Examination of the progress of the reaction indicated that the first product is probably tetrathionic acid ... [Pg.220]

According to this view the intermediate sulphur atoms are probably arranged in a similar manner in the polythionic acids and the hydrogen polysulphides, and tetrathionic acid may be considered as a sulphur analogue to perdisulphuric acid.2... [Pg.221]

Dithionic acid. Trithionic acid. Tetrathionic acid. Pentatbionic acid. [Pg.222]

The bimolecular nature of sulphur trioxide is cited in support of these views, and the absence of colour in the polythionic acids is mentioned as being opposed to the polysulphide linking of some of the earlier formulae. Nevertheless, the above formulae do not appear to be in agreement with the relative stabilities of the acids, but suggest that the tetrathionic acid is less stable than the more compact trithionic acid, or than the more saturated pentathionic acid (cf. pp. 211, 215). [Pg.223]

H2S4Oe (aq.). Assuming tetrathionic acid to be completely ionized, one finds Qf for H2S40e (aq.) equal to that for S408 (aq.). [Pg.200]

Cupric tetrathionate, CuS406.—Concentration of a solution of cupric hydroxide in aqueous tetrathionic acid yields the crystalline tetrathionate.3... [Pg.284]

Sodium tetrathionate, Na2S40g, is formed when NagSgOg is oxidised with iodine. Although this, and other tetrathionates, can be isolated as solids, they are thermally unstable. Aqueous tetrathionic acid results from adding dilute H2SO4 to a solution of PbS40g attempts at concentration eventually cause decomposition ... [Pg.368]

Consider the polythionic acids, H2S 06 = [(H0)(0)2SS 2S(0)2(0H)] (n > 2), which have the common names dithionic acid, trithionic acid, tetrathionic acid, etc. They may be named systematically using additive nomenclature, as shown in Table IR-8.1. For > 3, they may also be named substitutively on the basis of the central (poly)sulfane skeleton, as exemplified below. [Pg.126]

H,S,0, Pyroaulphuric acid. H,S,0, Dithionic acid. H,S,0, Tritbionic acid. H,S,0, Tetrathionic acid. H,S,0, Pentathionic acid. [Pg.114]

Formation of tetrathionic acid, which appears to be the first stable product ... [Pg.208]

HaSaOj Pyrosulfuric acid. HaSaOa Dithionic acid. HaSaO, Trithionic acid. HaS,0 Tetrathionic acid. HaSsOe Pentathionic acid. [Pg.97]

H. Tetrathionic Acid and Tetrathionates Test with antimony trichloride... [Pg.457]

Limit of Identification 8 y tetrathionic acid Limit of Dilution 1 6,000... [Pg.457]

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