Other required and useful ions 0.0 / 5 ? ChemistryTransition metalsA2/A-levelOCR Created by: Oliviali11yCreated on: 26-04-19 20:40 Required Ions Formula, colour and made by 1 of 11 Cr2O7 2- (aq) Dichromate, orange solution, made by oxidation of Cr3+ using H2O2/OH-. Can be reduced back to Cr3+ using Zn/H+ 2 of 11 CrO4 2- (aq) Chromate, yellow solution, made by oxidation of Cr3+ using H2O2/OH- 3 of 11 Cr2+ (aq) Blue solution, made by reduction of Cr3+ using Zn 4 of 11 MnO4- (aq) Purple solution, made by oxidation of Mn2+ 5 of 11 Mn2O3 (s) Dark brown precipitate, made by oxidation of Mn(OH)2 by oxygen 6 of 11 Other Useful Ions Formula, colour and and key information 7 of 11 Cu+ Colourless solution, formed by reduction of Cu2+. Disproportionate into Cu and Cu2+ 8 of 11 Zn2+/Sc3+ (aq) Colourless solution, not transition metals by definition 9 of 11 [Zn(H2O)4(OH)2] solid/ [Sc(H2O)3(OH)3] solid White solid, not transition metals by definition 10 of 11 CuI (solid) White solid, formed by reduction of Cu2+ using I- 11 of 11
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