Mercurials mercury

Merkuri-. mercuric, mercuri-, mercury(II). Merkuriah en, pi. Pharm.) mercurials. Merkuriahnittel, n. Pharm.) mercurial. Merkuri-ammoniumchlorid, n. mercuriammo-nium chloride, -azetat, n. mercuric acetate, mercury(II) acetate, -chlorid, n. mercuric chloride, mercury(II) chloride, -cyamd, n. mercuric cyanide, mercury(II) cyanide, -cyanwasserstoffs ure, /. mercuricyanic acid, cyanomercuric(II) acid. 

Discussion. The indicator electrode employed is a mercury-mercury(II)-EDTA complex electrode. A mercury electrode in contact with a solution containing metal ions M"+ (to be titrated) and a small added quantity of a mercury(II)-EDTA complex HgY2- (EDTA = Na2H2 Y) exhibits a potential corresponding to the half-cell ... 

Titration assembly. The electrode system consists of a mercury electrode and a saturated calomel [or, in some cases, a mercury-mercury(I) sulphate] reference electrode, both supported in a 250 mL Pyrex beaker. Provision is made for magnetic stirring and the potential is followed by means of an electronic millivoltmeter or an auto-titrator. 

Mercury(II) chloranilate 700 Mercury(II) nitrate standard soln. of, 359 Mercury/mercury( II )-EDTA electrode (mercury electrode) 586 potentiometric titration of metallic ions with EDTA and, 588 prepn. of, 587 Mercury thiocyanate 700 Metaphosphoric acid in homogeneous precipitation, 426 Metal apparatus 93 Metal ion buffer 53... 

If the concentrations in the cell are such that it is reported as having a positive emf (that is, the mercury/mercury(I) chloride electrode is found to be positive), then the reaction as written is spontaneous. If the concentrations were such that the emf were reported as negative (that is, the hydrogen electrode were found to be positive), then the reverse of the reaction that we have derived would be spontaneous. 

When ethylene was radiated by UV or in the presence of mercury, mercury (II) or silver oxide at ambient temperature or lead (II) oxide at 100°C, the reaction was explosive. 

Interaction of chlorine with methane is explosive at ambient temperature over yellow mercury oxide [1], and mixtures containing above 20 vol% of chlorine are explosive [2], Mixtures of acetylene and chlorine may explode on initiation by sunlight, other UV source, or high temperatures, sometimes very violently [3], Mixtures with ethylene explode on initiation by sunlight, etc., or over mercury, mercury oxide or silver oxide at ambient temperature, or over lead oxide at 100°C [1,4], Interaction with ethane over activated carbon at 350°C has caused explosions, but added carbon dioxide reduces the risk [5], Accidental introduction of gasoline into a cylinder of liquid chlorine caused a slow exothermic reaction which accelerated to detonation. This effect was verified [6], Injection of liquid chlorine into a naphtha-sodium hydroxide mixture (to generate hypochlorite in situ) caused a violent explosion. Several other incidents involving violent reactions of saturated hydrocarbons with chlorine were noted [7],... 

Mercury Mercury converted to diethyldithiocarbamate, concen- Flameless AAS 0.1ng/l... 

Mercury Mercury complexed with ammonium tetra methylene- Chloroform extract analysed by < 5 ng/1 Hg absolute dithiocarbamate, extracted with chloroform graphite tube AAS... 

Slowinski K, Fong HKY, Majda M (1999) Mercury-mercury tunneling junctions. 1. Electron tunneling across symmetric and asymmetric alkanethiolate bilayers. J Am Chem Soc 103 7257-7261... 

The electrode consists of two concentric glass tubes, the inner one of which contains mercury in contact with a paste of mercury, mercury(I) chloride (calomel), and potassium chloride. This is in contact with a solution of potassium chloride in the outer tube which itself makes contact with the sample solution via a porous frit, fibre or ground-glass sleeve (Figure 6.1). 

Reference Electrodes Colomel electrode Mercury-mercury (I) sulphate electrode. 

---