Mercury reaction

Mercury fulminate is a pale brownish solid, insoluble in cold water, but dissolving slightly in hot water to a solution which does not give the normal mercury reactions. In cold conditions it is stable, but at higher temperatures gradually decomposes and loses strength as an explosive. It has a density of 4-45 g ml-1 and a velocity of detonation, when compressed to a practical density of 2-5, of about 3600 m s-1. 

Reaction of l,l -di(chloromercuri) ferrocene with sodium iodide or sodium thiosulfate might be expected to lead to higher homologs of XXIX in which ferrocene units are bridged by atoms of mercury. Reactions of this type have produced apparently polymeric materials with structures such as XXX, although the very limited solubility of the products has thus far precluded reliable molecular weight measurements (80). 

Mercury. Reaction to form amalgams is vigorous or violent.20... 

The advantage of the absolute method is clearly that there is no need for incorporation of errors due to the reference molecules. However, in many absolute studies, one can follow merely one or two reactants, and considering the complexity of mercury reactions, and the extent of secondary reactions, the calculated values may be affected. Another challenge is that absolute rate studies often are performed at lower pressure than tropospheric boundary layer pressure ( 740 Torr) and at concentrations orders of magnitude higher than tropospheric levels. Hence the data obtained under such conditions must be properly corrected for the ambient tropospheric situation, particularly in the case of complex mercury adduct reactions, and given the lack of detailed product analysis, and different carrier gases, this is not trivial. However, as shown in Pal and Ariya [19], both relative and absolute studies of the same reaction can yield the same values of rate constants within the experimental uncertainties, and thus increase the confidence in the overall result. 

Liang L, Brooks, RJ, et al. 1995. Mercury reactions in the human mouth with dental amalgams. In Porcella DB, Wheatley B, eds. Mercury as a global pollutant. Proceedings of the Third International Conference Whistler, British Columbia, July 10-14, 1994. Boston, MA Kluwer Academic Publishers, 103-107. 

Mercury differs from the other metals in that it reacts at much lower pH (Fig. 2.). However, this is indeed consistent in that its first hydrolysis constant is also much lower (negative log 3.4). There are also large effects of chloride concentration on mercury reaction (Fig. 2.). This occurs because the strong affinity between mercury and chlorine means that the concentration of the species present in solution change with chloride concentration. Thus, this result shows that reaction does depend on the species in solution. 

The half-wave potentials measured by this method include the amalgamation potential of the metal-mercury reaction. The potential for the overall process for Fm, i.e. 

Catalyst Temperature (°C) HCOOH pressure (mm mercury) Reaction order References ... 

Vigorous to violent reactions may occur when mixed with strong oxidizers. 1,4-Di-oxane forms explosive complexes with perchlorates of many metals, such as silver and mercury. Reaction with hydrogen and nickel above 210 C (410°E) is explosive (NEPA... 

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