Transition Metals Flashcards
Colour of aqueous Mn2+
Pale pink
Addition of NaOH with Mn2+
Forms beige/cream precipitate = Mn(OH)2
Addition of excess NaOH with Mn2+
Precipitate is insoluble
Addition of NH3 with Mn2+
Beige/cream precipitate = Mn(OH)2
Addition of excess NH3 with Mn2+
Insoluble
Colour of aqueous Ni2+
Green
Addition of NaOH with Ni2+
Green precipitate = Ni(OH)2
Addition of excess NaOH with Ni2+
Insoluble
Addition of NH3 with Ni2+
Green precipitate = Ni(OH)2
Addition of excess NH3 with Ni2+
Soluble - blue solution
Colour of aqueous Cu2+
Pale blue = Cu(H2O)6
Addition of NaOH with Cu2+
Pale blue precipitate = Cu(OH)2
Addition of excess NaOH with Cu2+
Insoluble
Addition of NH3 with Cu2+
Pale blue precipitate = Cu(OH)2
Addition of excess NH3 with Cu2+
Soluble - dark blue precipitate
Colour of aqueous Fe2+
Green/blue
Addition of NaOH with Fe2+
Blue/green gelatinous precipitate = Fe(OH)2
Addition of excess NaOH with Fe2+
Insoluble
Addition of NH3 with Fe2+
Green/blue gelatinous precipitate = Fe(OH)2
Addition of excess NH3 with Fe2+
Insoluble
Colour of aqueous Zn2+
Colourless
Addition of NaOH with Zn2+
White precipitate = Zn(OH)2
Addition of excess NaOH with Zn2+
Soluble - colourless solution
Addition of NH3 with Zn2+
White precipitate = Zn(OH)2
Addition of excess NH3 with Zn2+
Soluble - colourless solution
Colour of aqueous Fe3+
Pale yellow
Addition of NaOH with Fe3+
Red/brown gelatinous precipitate = Fe(OH)3
Addition of excess NaOH with Fe3+
Insoluble
Addition of NH3 with Fe3+
Red/brown gelatinous precipitate = Fe(OH)3
Addition of excess NH3 with Fe3+
Insoluble
Colour of aqueous Cr3+
Green
Addition of NaOH with Cr3+
Green precipitate = Cr(OH)3
Addition of excess NaOH with Cr3+
Soluble - green solution
Addition of NH3 with Cr3+
Green precipitate = Cr(OH)3
Addition of excess NH3 with Cr3+
Purple solution
