Reactions of Aqueous Metal ions (Colours) Flashcards by Anya Olsen

Q

[Cr(H2O)6]3+ (aqua ion, crystalline)

A

Purple

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Q

[Mn(H2O)6]2+ (aqua ion, crystalline)

A

Pink

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Q

[Fe(H2O)6]2+ (aqua ion, crystalline)

A

Green

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Q

[Fe(H2O)6]3+ (aqua ion, crystalline)

A

Pale violet

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Q

[Co(H2O)6]2+ (aqua ion, crystalline)

A

Pink

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Q

[Ni(H2O)6]2+ (aqua ion, crystalline)

A

Green

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Q

[Cu(H2O)6]2+ (aqua ion, crystalline)

A

Blue

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Q

[Zn(H2O)6]2+ (aqua ion, crystalline)

A

Colourless

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Q

[Cr(H2O)4(OH)2]+ (salt solution)

A

Green

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Q

[Mn(H2O)4(OH)2] (salt solution)

A

Very pale pink (effectively colourless)

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Q

[Fe(H2O)5(OH)]2+ (salt solution)

A

Yellow

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Q

[Cr(H2O)3(OH)3] (dropwise NaOH(aq))

A

Green/grey ppte

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Q

[Mn(H2O)4(OH)2] (dropwise NaOH(aq))

A

Buff ppte (off white)

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Q

[Fe(H2O)4(OH)2] (dropwise NaOH(aq))

A

Green ppte

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Q

[Fe(H2O)3(OH)3] (dropwise NaOH(aq))

A

Brown ppte

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Q

[Co(H2O)4(OH)2] (dropwise NaOH(aq))

A

Blue ppte

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Q

[Ni(H2O)4(OH)2] (dropwise NaOH(aq))

A

Green ppte

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Q

[Cu(H2O)4(OH)2] (dropwise NaOH(aq))

A

Light blue ppte

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Q

[Zn(H2O)4(OH)2] (dropwise NaOH(aq))

A

White ppte

Q

[Cr(OH)6]3- (excess NaOH(aq) on ppte)

A

Green solution

Q

[Mn(H2O)4(OH)2 + Excess NaOH

A

Insoluble

Q

[Fe(H2O)4(OH)2] + Excess NaOH

A

Insoluble

Q

[Fe(H2O)3(OH)3] + Excess NaOH

A

Insoluble

Q

[Co(H2O)4(OH)2] + Excess NaOH

A

Insoluble

Q

[Ni(H2O)4(OH)2] + Excess NaOH

A

Insoluble

Q

[Cu(H2O)4(OH)2] + Excess NaOH

A

Insoluble

Q

[Zn(OH)4]2- (excess NaOH(aq) on ppte)

A

Colourless Solution

Q

[Cr(OH)3(H2O)3] (dropwise NH3)

A

Green/grey ppte

Q

[Mn(H2O)4(OH)2] (dropwise NH3)

A

Buff ppte

Q

[Fe(H2O)4(OH)2] (dropwise NH3)

A

Green ppte

Q

[Fe(H2O)3(OH)3] (dropwise NH3)

A

Brown ppte

Q

[Co(H2O)4(OH)2] (dropwise NH3)

A

Blue ppte

Q

[Ni(H2O)4(OH)2] (dropwise NH3)

A

Green ppte

Q

[Cu(H2O)4(OH)2] (dropwise NH3)

A

Light blue ppte

Q

[Zn(H2O)4(OH)2] (dropwise NH3)

A

White ppte

Q

[Cr(NH3)6]3+ (excess NH3 on ppte)

A

Green solution

Q

[Mn(H2O)4(OH)2] + Excess NH3

A

Insoluble

Q

[Fe(H2O)4(OH)2] + Excess NH3

A

Insoluble

Q

[Fe(H2O)3(OH)3] + Excess NH3

A

Insoluble

Q

[Co(NH3)6]2+ (excess NH3 on ppte)

A

Pale brown solution that darkens

Q

[Ni(NH3)6]2+ (excess NH3 on ppte)

A

Pale blue solution

Q

[Cu(NH3)4(H2O)2]2+ (excess NH3 on ppte)

A

Dark blue solution

Q

[Zn(NH3)4(H2O)2]2+ (excess NH3 on ppte)

A

Colourless solution

Q

[Co(Cl)4]2- (conc. Cl- (eg. HCl))

A

Deep blue solution

Q

[Cu(Cl)4]2- (conc. Cl- (eg. HCl))

A

Yellow green solution