Search results
Results From The WOW.Com Content Network
Chromium(III) chloride (also called chromic chloride) is an inorganic chemical compound with the chemical formula Cr Cl 3.It forms several hydrates with the formula CrCl 3 ·nH 2 O, among which are hydrates where n can be 5 (chromium(III) chloride pentahydrate CrCl 3 ·5H 2 O) or 6 (chromium(III) chloride hexahydrate CrCl 3 ·6H 2 O).
Anhydrous chromium(III) chloride (CrCl 3) A large number of chromium(III) compounds are known, such as chromium(III) nitrate, chromium(III) acetate, and chromium(III) oxide. [8] Chromium(III) can be obtained by dissolving elemental chromium in acids like hydrochloric acid or sulfuric acid, but it can also be formed through the reduction of ...
Because of the very high melting point of chromium, chromium thermite casting is impractical. Heating with chlorine and carbon yields chromium(III) chloride and carbon monoxide: Cr 2 O 3 + 3 Cl 2 + 3 C → 2 CrCl 3 + 3 CO. Chromates can be formed by the oxidation of chromium(III) oxide and another oxide in a basic environment: 2 Cr 2 O 3 + 4 MO ...
Anhydrous chromium(III) chloride (CrCl 3) A large number of chromium(III) compounds are known, ... For the production of pure chromium, the iron must be separated ...
Chromium chloride may refer to: Chromium(II) chloride , also known as chromous chloride Chromium(III) chloride , also known as chromic chloride or chromium trichloride
CrCl 2 is produced by reducing chromium(III) chloride either with hydrogen at 500 °C: 2 CrCl 3 + H 2 → 2 CrCl 2 + 2 HCl. or by electrolysis. On the laboratory scale, LiAlH 4, zinc, and related reductants produce chromous chloride from chromium(III) precursors: 4 CrCl 3 + LiAlH 4 → 4 CrCl 2 + LiCl + AlCl 3 + 2 H 2 2 CrCl 3 + Zn → 2 CrCl 2 ...
He treated phenylmagnesium bromide with chromium(III) chloride to give a new product (after hydrolysis) which he incorrectly identified as pentaphenyl chromium bromide (Ph 5 CrBr). Years later, in 1957 H.H. Zeiss et al. repeated Hein's experiments and correctly arrived at a cationic bisarene chromium sandwich compound (ArH 2 Cr +). [4]
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more