Ligand substitutions and transition precipitation 0.0 / 5 ? ChemistryTransition metalsA2/A-levelOCR Created by: Pheebzicles01Created on: 01-04-19 19:03 What can the copper ions substitute in ligand substitution? Ammonia & chloride ions 1 of 25 What is copper sulfate in water? [Cu(H2O)6]2+ 2 of 25 What colour is [Cu(H2O)6]2+ pale blue 3 of 25 What is the complex that forms when [Cu(H2O)6]2+ reacts with ammonia? [Cu(NH3)4(H2O)2]2+ 4 of 25 What is the shape and bond angle in [Cu(H2O)6]2+ Octahedral 90 degrees 5 of 25 What are the stages of the ligand substitution of [Cu(H2O)6]2+ with ammonia [Cu(H2O)6]2+ reacts with ammonia to form blue precipitate of Cu(OH)2. This redissolves in excess ammonia to form dark blue solution 6 of 25 What forms when [Cu(H2O)6]2+ reacts with HCl [CuCl4]2- 7 of 25 What is the colour of [CuCl4]2- ? Yellow 8 of 25 What is the shape of [CuCl4]2- ? tetrahedral (109.5) 9 of 25 What forms when KCr(SO4)2 ~12(H20) dissolves in water? [Cr(H2O)6]3+ 10 of 25 What colour is [Cr(H2O)6]3+ Pale purple 11 of 25 What forms when chromium sulfate dissolves in water? [Cr(H2O)5SO4]+ 12 of 25 What colour is [Cr(H2O)5SO4]+ ? Green 13 of 25 What happens when [Cr(H2O)6]3+ reacts with ammonia? Initially grey-green Cr(OH)3 forms. This dissolves in excess ammonia to form [Cr(NH3)6]3+ 14 of 25 What colour is [Cr(NH3)6]3+ Purple 15 of 25 Colour of Cu 2+ Blue 16 of 25 Colour of Fe 2+ Pale green 17 of 25 Colour of Fe 3+ Pale yellow 18 of 25 Colour of Mn 2+ Pale pink 19 of 25 Colour of Cr 3+ Violet 20 of 25 Cu 2+ with NaOH colour blue precipitate 21 of 25 Fe 2+ with NaOH colour Green precipitate 22 of 25 Fe 3+ with NaOH colour orange - brown precipitate 23 of 25 Mn 2+ with NaOH colour light brown precipitate 24 of 25 Cr 3+ with NaOH colour grey green precipitate to dark green solution 25 of 25
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