Cupric chemical properties

Chemical Designations - Synonym Cupric Bromide, Anhydrous Chemical Formula CuBrj. Observable Characteristics - Physical State (as normally shipped) Solid Color Black Odor None. Physical and Chemical Properties - Physical State at 15 and 1 atm. Solid Molecular Weight 223.35 Boiling Point at 1 atm. Not pertinent (decomposes) Freezing Point 928, 498, 771 Critical Tenqterature Not pertinent Critical Pressure Not pertinent Specific Gravity 4.77 at 20°C (solid) Veqjor (Gas) Density NotpeTtmc at RatioofSpecificHeatsqfVapor(Gas) Not pertinent Z/t/ent Hec/ of Vaporization Not pertinent Heat of Combustion Not pertinent Heat of Decomposition Not pertinent. 

The chemical properties of organic matter derived from soil, water, air, or waste materials has traditionally been analyzed by chemical degradation techniques such as cupric oxide oxidation. These are often lengthy, tedious procedures, and involve derivatization of reaction mixtures before analysis. Furthermore the hydrolysis and degradation reactions applied are far from complete, resulting in a less reliable estimation of the character of organic matter. ... 

Synonyms Cupric Bromide, Anhydrous Chemical For-mub CuBr2 (i ) Observable Characteristics — Physical State (as normally shipped) Solid Cobr Black Odor None (iii) Physical and Chemical Properties —... 

In the absence of an adequate knowledge of the chemical nature of hydrogenase, it is not possible to interpret its properties in detail. In a number of important respects, however, its catalytic behavior resembles that of some of the homogeneous catalysts that have been studied. Among these, the cupric complexes probably come closest to serving as models for this enzyme. 

Another typical property of cellulose and its derivatives dependent on water sorption is the swelling of the fibre that occurs under the influence of certain solutions such as aqueous sodium hydroxide or an ammoniacal solution of cupric oxide, i.e. cuprammonium . The process of swelling does not start with sorption as in the instance of water. In the first stage of swelling the liquid penetrates the molecular chains of the cellulose, gradually coming in contact with all of them so that chemical combination takes place to form alkali celluloses, (C6H,0O5) NaOH and (C6H,0O5)2 NaOH. 

HrabdrovdE., ValachovdK., Juranek ., Soltes L. Free-radical degradation of high-molar-mass hyaluronan induced by ascorbate plus cupric ions. Anti-oxidative properties of the PieSt any-spa curative waters from healing peloid and maturation pool. In Kinetics, Catalysis and Mechanism of Chemical Reactions G. E. Zaikov (eds). Nova Science Publishers,New York, 2011 pp. 29-36. 

Thus it is seen that the cupric ferrocyanide carries down a part of the potassium ferrocyanide, and that the latter cannot diffuse into the surrounding liquid nor send off ion molecules because of dissociation. Duclaux believes this potassium ferrocyanide is chemically combined. This property is probably connected with the power of copper ferrocyanide to form scmipermeable membranes for crystalloids. 

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