Silver bromide AgBr

Bromides of sodium, potassium, magnesium and calcium occur in sea water (about 0.07 % bromine) but the Dead Sea contains much more (5% bromine). Salt deposits (e.g. at Stassfurt) also contain these bromides. Silver bromide, AgBr, is found in South America. 

Silver Bromide. Silver bromide, AgBr, is formed by the addition of bromide ions to an aqueous solution of silver nitrate. The light yellow to green-yeUow precipitate is less soluble in ammonia than silver chloride, but it easily dissolves in the presence of other complexing agents, such as thiosulfate ions. 

Both lead bromide, PbBr2, and silver bromide, AgBr, are only slightly soluble. 

Discussion. These anions are both determined as silver bromide, AgBr, by precipitation with silver nitrate solution in the presence of dilute nitric acid. With the bromate, initial reduction to the bromide is achieved by the procedures described for the chlorate (Section 11.56) and the iodate (Section 11.63). Silver bromide is less soluble in water than is the chloride. The solubility of the former is 0.11 mg L 1 at 21 °C as compared with 1.54 mg L 1 for the latter hence the procedure for the determination of bromide is practically the same as that for chloride. Protection from light is even more essential with the bromide than with the chloride because of its greater sensitivity (see Section 11.57). 

Periodates are also reduced by sulphurous acid, and may therefore be similarly determined. Similar remarks apply to bromates these are ultimately weighed as silver bromide, AgBr. 

Seif-Test 11.10B The molar solubility of silver bromide, AgBr, at 25°C is 8.8 X 10 mol-L. What is the value of Ksp for silver bromide ... 

In a similar way, a bromide and an iodide will react to produce either a cream precipitate of silver bromide (AgBr) or a yellow precipitate of silver iodide (Agl) (Figure 8.19). 

Daguerre used sodium thiosulfate (Na2S203) to make the photo permanent. Today we still use sodium thiosulfate for this purpose, but we call it hypo. The sodium thiosulfate removes unexposed silver bromide (AgBr) as follows ... 

Uses. Much silver is used in the form of alloys. Alloys of copper and silver are much harder than pure silver and equally or more resistant to corrosion. Sterling silver and silver coins are alloys of this type. Small amounts of silver are used in the electroplating of a wide variety of objects, in the silvering of mirrors, and so forth. This metal is of real value in the form of compounds such as silver nitrate (AgN03), commonly known as lunar caustic, which is used in medicine (to cauterize wounds) and in the manufacture of indelible inks. Silver bromide (AgBr) is an extremely important compound because of its use in photography. 

Silver nitrate solution curdy, pale-yellow precipitate of silver bromide, AgBr, sparingly soluble in dilute, but readily soluble in concentrated ammonia solution. The precipitate is also soluble in potassium cyanide and sodium thiosulphate solutions, but insoluble in dilute nitric acid. 

Silver bromide, AgBr.—Precipitation of a solution of a silver salt with a bromide solution yields a flocculent to pulverulent, amorphous precipitate of silver bromide, its colour being white, yellowish-white, or lemon-yellow according to the conditions of precipitation. Its melting-point is given as 422° C.5 and 427° C.,e and the density of the precipitated salt as 6-89 to 6-52, and after fusion as 6-82 to 6-49. 

Silver bromide AgBr 2.2 0.5-22 Sensitive to UV and VIS, very soft, react with many metals... 

If 53.1958 gm. of silver form 92.6042 gm. of silver bromide, AgBr, what is the atomic weight of silver ... 

Hydrogen bromide, HBr, is a colorless gas. Its solution in water, hydrobromic acid, is a strong acid. The principal salts of hydrobromic acid are sodium bromide, NaBr, and potassium bromide, KBr, vhich are used in medicine, and silver bromide, AgBr, which, like silver chloride AgCl, and silver iodide, Agl, is used in making photographic emulsions. v... 

Silver bromide, AgBr, is used to make photographic black-and-white film. Calculate the concentration of Ag and Br ions in a saturated solution at 25°C using Table 3. 

I Photographic film contains small grains of silver bromide (AgBr) suspended In a gelatinous emulsion that is spread onto a flexible backing material. 

Silver bromide, AgBr, is the compound on black and white film that causes the color change when the film is exposed to light. It has a structure similar structure to that of sodium chloride. What are the particles that form the basic structure of silver bromide What type of attraction holds these particles together Draw a rough sketch of the structure of solid silver bromide. 

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