Some compounds of chromic chloride with substituted ammonias
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Some compounds of chromic chloride with substituted ammonias by Lang, William Robert

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Published by The University library: pub. by the librarian in [Toronto] .
Written in English

Subjects:

  • Chromium chloride.,
  • Amines.

Book details:

Edition Notes

ContributionsCarson, Charles Macdonald. joint author.
Classifications
LC ClassificationsQD1 .T65 no. 50
The Physical Object
Pagination[2] p.
ID Numbers
Open LibraryOL6961295M
LC Control Number05033597
OCLC/WorldCa29093794

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  In the presence of chloride ions (for example with chromium(III) chloride), the most commonly observed color is green. This happens when two of the water molecules are replaced by chloride ions to give the tetraaquadichlorochromium(III) ion - [Cr(H 2 O) 4 Cl 2] +. Once again, notice that replacing water molecules by chloride ions changes the. Some compounds of chromic chloride with substituted ammonias - Saturday, J AM; Amish - Thursday, J PM; The still point of the turning world - Wednesday, J AM; Towards a solution of the debt crisis - Tuesday, J AM. Accordingly the complexes of o-, m; and p; nitro- and chloro- substituted benzaldehydes with anhydrous chromic chloride were prepared. Composition of the complexes. It is clear from results quoted in the experimental section that, except in the case of the meta substituted aldehydes, complexes are formed in presence of excess by: 4. It is known to attempt to plate chromium from a solution containing trivalent chromium salts and organic complexants. The invention provides an aqueous chromium electroplating system containing trivalent chromium, together with both a formate or acetate and a bromide. Optionally the solution also contains ammonium, borate, chloride, sulphate and alkali metal ions and a wetting agent.

G. Thilagavathi, S. Viju, in Antimicrobial Textiles, Quaternary ammonium compounds. Quaternary ammonium compounds, mainly those containing chains of 12–18 carbon atoms, have been widely used as compounds carry a positive charge at the N atom in solution and inflict a variety of detrimental effects on microbes, including damage to cell membranes, denaturation. but indicates that he used about 10 g/l of chromium as the double chloride of sodium and ammonia. At about the same time, in , Professor Robert Bunsen in heidelberg investigated the effect of current density on the electrodeposition of chromium from chromous chloride solutions containing chromic chloride, in a two compartment cell. Replacement of the water by chloride ions. In the presence of chloride ions (for example with chromium(III) chloride), the most commonly observed colour is green. This happens when two of the water molecules are replaced by chloride ions to give the tetraaquadichlorochromium(III) ion - . Metallic chromium dissolves in dilute hydrochloric acid forming Cr(II) and hydrogen gas, H 2. In aqueous solution, Cr(II) is present as the complex ion [Cr(OH 2) 6] 2+. Similar results are seen for sulphuric acid but pure samples of chromium may be resistant to attack. Chromium metal is not dissolved by nitric acid, HNO 3 but is passivated instead.

  Thus \(\ce{N}\)-aryl-substituted azanols can be obtained directly from the corresponding nitro compounds with zinc and ammonium chloride solution. However, zinc and hydrochloric acid gives the amine: The difference between these reactions is in the reduction rates associated with the acidity of the solution. Ammonium chloride is a much weaker. It is known to attempt to plate chromium from a solution containing trivalent chromium salts and organic complexants. The invention provides an aqueous chromium electroplating system containing trivalent chromium together with both a formate or acetate and a bromide. Optionally the solution also contains ammonium, borate, chloride, sulphate and alkali metal ions and a wetting agent.   Kinetics of oxidation of substituted toluenes with chromyl chloride—II. Tetrahedron , 24 (1), DOI: /(68) H.C. Duffin, R.B. Tucker. Some coordination complexes of chromic chloride with aromatic aldehydes and . Calcium oxide. Carbon (activated) Carbon tetrachloride Chlorates Chromic acid. Chromium trioxide. Chlorine. Chlorine dioxide. Copper Hydroperoxide.