Bismuthyl

Bismuth Salts. Bismuth trioxide dissolves in concentrated solutions of strong oxyacids to yield bismuth salts. In more dilute solutions of strong acids or in solutions of weak acids, the oxide reacts to form bismuthyl or basic salts. The normal salts are very susceptible to hydrolysis. 

Bismuth Triperchlorate Pentahydrate. Bismuth(III) perchlorate pentahydrate [66172-92-7], Bi(C10 2 5H20, is prepared by dissolving Bi202 in 70% HCIO4. Anhydrous bismuth triperchlorate [14059-45-1], Bi(C10 2> maybe prepared by heating bismuthyl perchlorate monohydrate [66172-93-8], BiOClO H2O, between 80 and 100°C. Attempts to dissolve bismuth metal in concentrated perchloric acid have resulted in explosions. Treatment of bismuth or with dilute solutions of perchloric acid yields hydrates of bismuthyl perchlorate. 

Bismuth Trisulfate. Bismuth(III) sulfate [7787-68-0], Bi2(S0 3, is a colorless, very hygroscopic compound that decomposes above 405°C to yield bismuthyl salts and Bi202. The compound hydrolyzes slowly in cold water and rapidly in hot water to the yellow bismuthyl sulfate [12010-64-9], (Bi0)2S04. The normal sulfate is isomorphous with the sulfates of yttrium, lanthanum, and praseodymium. 

Chemical Designations - Synonyms Basic Bismuth Chloride Bismuth Chloride Oxide Bismuth Subchloride Bismuthyl Chloride Pearl White Chemical Formula BiOCl. 

However, if there was sufficient amount of H+ ions in the solution, equilibrium shifted towards the left and bismuth remained in the solution as Bi3+. Therefore, during sonication activated water molecules were formed which reacted with Bi3+ ions. But instead of forming Bi(OH)3, they formed bismuthyl ions, BiO+, due to the fact that Bi(OH)3 was a weaker base, therefore hydrolysed readily to generate bismuthyl ion, BiO+. These steps could be summarised as under ... 

The amount of precipitated bismuth decreased as the concentration of bismuth salt increased (Table 9.16) and the duration of sonication required to bring about hydrolysis also increased. The initial reaction was spontaneous as per Eq. (9.111), which, however, seemed to be facilitated by ultrasonic cavitation at high concentration of bismuth. Since the H+ ions were also produced during the formation of bismuthyl ion, at the point where the sum of concentration of H+ ions present initially and formed by Eq. (9.110) was equal to the concentration required to shift the equilibrium of Eq. (9.111) towards left side, the hydrolysis did not occur even after sonication. 

Bismuth tritelluride, 4 24 physical properties of, 4 20t Bismuth trithiocyanate, 4 25 Bismuth Vanadate Yellow, 19 405-406 pigment for plastics, 7 370t Bismuthyl carbonate hemihydrate, 4 25 Bismuthyl nitrate hemihydrate, 4 25 Bismuthyl nitrite hemihydrate, 4 25 Bis(lV-maleimidomethyl) ether (BME), hemoglobin modifier, 4 113 Bisoprolol fumarate, molecular formula and structure, 5 156t Bis(pentafluorophenyl)borane, 13 638 Bis(pentafluorophenyl)tri-4-tolylbismuth, 4 35... 

Synonyms bismuth chloride oxide basic bismuth chloride bismuth subchloride bismuthyl chloride... 

Synonyms bismuth sub nitrate basic bismuth nitrate bismuthyl nitrate bismuth white... 

Bismuth Chloride Oxide Bismuth Oxychloride Bismuth Subchloride Bismuthyl Chloride Bisphenol A... 

BiCojO CjjH, Cobaltocenium, stereoisomer of p4-bismuthylidynehexadecacarbonyl-tetracobaltate(l-), [112839-88-0], 31 224 BiFe4N3O16C40H60, Ethanaminium, N,N,N-triethyl-, stereoisomer of fi4-bismuthyl-idynehexadecacaibonyltetrafenate(3-) (3 1), [92763-37-6], 31 221 BiN3C6H)g, Bismuthinetriamine, hexamethyl-, [57403-58-4], 31 99... 

N3BiFe4O16C40H60, Ethanaminium, N,N,N-triethyl-, stereoisomer of p4-bismuthyl-idynehexadecacarbonyltetraferrate(3-)... 

Bismuth trihalides exhibit an increased tendency toward hydrolysis, usually forming bismuthyl compounds, also called bismuth oxyhalides,... 

Normal bismuth nitrite, Bi(N02)3, is unknown. L, Vanino and P. Hartl13 prepared bismuthyl nitrite, Bi0(N02). H20, by adding sodium nitrite to an aq. soln. of mannitol bismuth nitrate. The yellowish-white precipitate decomposes above 60°, and readily dissolves in hydrochloric acid, forming a clear soln. on dilution. 

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