Anders Hoveland Posted October 12, 2011 Share Posted October 12, 2011 (edited) http://woelen.homesc...uIII/index.html Copper(II) salts can be oxidized to Copper(III) complexes, with the help of a hypochlorite or persulfate oxidizer, sodium hydroxide, and sodium periodate. The complex [Cu(H3IO6)2]-2 is oxidized to [Cu(H3IO6)2(OH)2]-3, which has a very deep brown-red color The composition of these complexes can more simply be thought of as: IO4[-],Cu[+2], IO4[-],(2)OH[-],(2)H2O and IO4[-],Cu[+3],IO4[-],(4)OH[-],(2)H2O Actually, Cu(OH)2 is soluble in concentrated solutions of NaOH showing that copper(II) oxide is actually slightly amphoteric. CsCuCl3, although copper is still in its normal +2 oxidation state, is a bright reddish-orange colored compound http://woelen.homesc...uCl3/index.html Edited October 12, 2011 by Anders Hoveland Link to comment Share on other sites More sharing options...
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