![]() ![]() Silver is also employed in the electrical industry: printed circuits are made using silver paints, and computer keyboards use silver electrical contacts. When the negative has the desired intensity, the uneffected silver bromide or iodide is removed by dissoving in a fixing agent, leaving the image behind. When light strikes a film coated with one of these compounds, some of the silver ions revert to the metal in tiny nuclei and the film is developed with a reducing agent which causes more silver to deposit on these nuclei. The major outlets are photography, the electrical and electronic industries and for domestic uses as cutlery, jewellery and mirrors.īoth colour and black and white images have relied on silver since the early days of photography: siver bromide and silver iodide are sensitive to light. The principal use of silver is as a precious metal and its halide salts, especially silver nitrate, are also widely used in photography. This is why silver objects need regular cleaning. It does not oxidize in air but reacts with the hydrogen sulfide present in the air, forming silver sulfide (tarnish). Silver is almost always monovalent in its compounds, but an oxide, a fluoride, and a sulfide of divalent silver are known. It has the highest electrical conductivity of all metals, but its greater cost has prevented it from being widely used for electrical purposes. It is not a chemically active metal, but it is attacked by nitric acid (forming the nitrate) and by hot concentrated sulfuric acid. ![]() Pure silver is nearly white, lustrous, soft, very ductile, malleable, it is an excellent conductor of heat and electricity. Silver - Ag Chemical properties of silver - Health effects of silver - Environmental effects of silver Separation and Concentration Purification Request.Plant Inspection & Process Optimalisation. ![]()
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