Dihydrogen sulfide

Titanium corrodes very rapidly in acid fluoride environments. It is attacked in boiling HCl or H2SO4 at acid concentrations of >1% or in ca 10 wt % acid concentration at room temperature. Titanium is also attacked by hot caustic solutions, phosphoric acid solutions (concentrations >25 wt%), boiling AlCl (concentrations >10 wt %), dry chlorine gas, anhydrous ammonia above 150°C, and dry hydrogen—dihydrogen sulfide above 150°C. 

Synonym(s) Hydrosulfuric acid stink damp sulfur hydride sulfurated hydrogen dihydrogen monosulfide dihydrogen sulfide sewer gas HSDB 1998... 

As an example, we consider the reduction by dihydrogen sulfide (H2S) of hexava-lent chromium (CrVI) to its trivalent form (Crm). Kim et al. (2001) report when pH is in the range 6.5-10, this process can occur via a reaction,... 

How many grcims of dihydrogen sulfide (H2S) must you add to 750 g of water to make a 0.35 m solution ... 

Reaction of the immonium ion (157) with dihydrogen sulfide produces the l,3-dithiole-2-thione (158) while reduction of the ion (157) with sodium borohydride, followed by treatment with sulfuric acid, resulted in the formation of the 1,3-dithiolylium salt (48) (76S489). 

Treatment of the dithiocarbamates (288) with dihydrogen sulfide leads to the formation of a variety of substituted l,3-dithiole-2-thiones (169) (75JPR123). The dithiocarbamates (288) can be easily prepared from enamines and the corresponding disulfides. 

Synonyms Hydrosulfuric acid, sulfuric hydride, sulfurated hydrogen, dihydrogen monosulfide, dihydrogen sulfide, stink damp, sewer gas... 

Synonyms Sulfur hydride Dihydrogen sulfide Hydrosulfuric acid Stink damp Sewer gas... 

Dihydrogen sulfide is a smelly, poisonous gas produced by the decaying of organic matter. What is the electron dot structure of H2S ... 

A 0.1 OM solution of dihydrogen sulfide, H2S, forms a solution with a pH of 4.0. What percent of the original H2S molecules react with water to form hydronium ions ... 

Dihydrogen sulfide (H S) and sulfur dioxide (SO2) are both colorless gases with unpleasant odors. Which of these gases has a higher rate of diffusion in air at the same temperature Explain your answer. 

SYNONYMS dihydrogen sulfide, hydrogen sulfiiric acid, hydrosulfuric acid, sewer gas, sufuretted hydrogen, sulfur hydride. 

When dihydrogen sulfide is dissolved in water, it is called,... 

The described reactions start from the compounds bis-9-bora-bicyclo[3.3.1]nonane (9H-9-BBN)2, elemental sulfur (Sg), and dihydrogen sulfide or from the easily preparable 9-iodo-9-borabicyclo[3.3.1]nonane. The procedures are simple and practicable, and the yields are nearly quantitative. The (9H-9-BBN)2-sulfur reaction can be followed not only by NMR spectroscopy but also by volumetric measurements of the evolved gas (H2). It is also remarkable that the BC bonds of the 1,5-cyclooctanediylboryl group are completely stable toward sulfidation at temperatures up to about 150 . The three compounds described here can be prepared easily on a scale of some 100 g of high purity. If necessary, the purification is possible, involving distillation or sublimation under vacuum without any decomposition. 

If the anion does not contain oxygen, the acid is named with the prefix hydro- and the suffix -ic attached to the root name for the element. For example, when gaseous HCl (hydrogen chloride) is dissolved in water, it forms hydrochloric acid. Similarly, hydrogen cyanide (HCN) and dihydrogen sulfide (H2S) dissolved in water are called hydrocyanic acid and hydrosulfuric acid, respectively. 

Most sulfide compounds of the transition metals are insoluble in water. Many of these metal sulfides have striking and characteristic colors by which we can identify them. Therefore, in the analysis of mixtures of metal ions, it is very common to precipitate the metal ions by using dihydrogen sulfide (commonly called hydrogen sulfide), H2S. Suppose you had a mixture of Fe, Cr, and Ni. Write net ionic equations for the precipitation of these metal ions by the use of H2S. 

Some aqueous reactions form a gas as a product. These reactions, as we learned in the opening section of this chapter, are called gas evolution reactions. Some gas evolution reactions form a gaseous product directly when the cation of one reactant reacts with the anion of the other. For example, when sulfuric acid reacts with lithium sulfide, dihydrogen sulfide gas is formed. 

A few compounds have older, well-established names. The compound H2S would be named dihydrogen sulfide by the prefix system, but is commonly called hydrogen snlfide. NO is still called nitric oxide, although its prefix name is nitrogen monoxide. The names wate and ammonia are used for H2O and NH3, respectively. 

Absorption of dihydrogen sulfide (H2S) in amine solutions is, for instance, applied in the desulfurization stages of oil refining processes. H2S and monoethanol amine (MEA) react in an aqueous solution following the formula below ... 

When the gases dihydrogen sulfide and oxygen (O2) react, they form the gases sulfur dioxide and water. 

In the case of arsenic sulfide, by using the acid dissociation constants of dihydrogen sulfide, we find the following relations ... 

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