Selenium and tellurium oxidizes\n08.02.2017\n\n\n\nThe most persistent oxides of selenium and tellurium are seo2 dioxide and teo2, which are colourless crystalline substances. For tellurium, there is also a known teo3 trekhokish, which breaks down into teo2 and oxygen when heated. Seo3 has not been established. Physical properties of seo2 and teo2: vapour elasticity of seo2 and teo2 (in mm pt). Art.) depending on the temperature is expressed in equations: for seo2 by a. g. amelin and m. i. belyakovvufor teo2 by c. ueno: selenium dioxide is dissolved in water with the formation of selenic acid h2seo3. The solubility of seo2 in water according to temperature is: telluric dioxide, unlike seo2, is virtually insoluble in water (at 100 degrees 1 hour teo2 is dissolved in 150,000 hours). This makes it easy to separate selenium from tellur. Teo2 dissolves in strong acids and alkaline solutions. When neutralizing acid or alkaline solution, hydrated tellurium dioxide is deposited. Selenic and telluric acids in acid solution under the action of a number of reducers (so2, sncl2, hydrazine, etc.) are recovered with the release of elemental selenium and tellurium. As you can see from the rice. 226, selenium is released from solutions by so2 at a concentration of hydrochloric acid of 10 to 35% or higher. However, telluric emissions range from 4 to 20% HCL. This can be used to separate selenium and tellurium.\n\n\n\n\n\nContact facebookclassmate mirtwitterlivejournalproperties selenium and teleratrarastvo germanium waste receiving monocrystalline germaniareceiving Germany high purity receiving Germany high purity and monocrystalls Germany with specified electrical properties receiving germaniaextraction Germany from waste processing coal extraction Germany from waste zinc production
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