Transition Metals - Required Reactions Flashcards by Gi D | Brainscape

Q

Fe2+ solution

A

[Fe(H2O)6]2+

Green solution

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Q

Addition of NaOH on Fe2+ solution

A

[Fe(H2O)4(OH)2] (s)

Green ppt
Brown on standing in air

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Q

Addition of excess NaOH on Fe2+ solution

A

No further change

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Q

Addition of NH3 to Fe2+ solution

A

[Fe(H2O)4(OH)2] (s)

Green ppt
Brown in standing in air

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Q

Addition of excess NH3 to Fe2+ solution

A

No further change

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Q

Action of Na2CO3 to Fe2+ solution

A

FeCO3 (s)

Green ppt

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Q

Cu2+ solution

A

[Cu(H2O)6]2+

Blue solution

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Q

Addition of NaOH to Cu2+ solution

A

[Cu(H2O)4(OH)2] (s)

Blue ppt

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Q

Action of excess NaOH to Cu2+ solution

A

No further change

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Q

Addition of NH3 to Cu2+ solution

A

[Cu(H2O)4(OH)2] (s)

Blue ppt

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Q

Addition of excess NH3 on Cu2+ solution

A

[Cu(H2O)2(NH3)4]+2 (aq)

Dark blue solution

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Q

Action of Na2CO3 on Cu2+ solution

A

CuCO3

Blue-green ppt

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Q

Fe3+ solution

A

[Fe(H2O)6]+3

Purple solution
May look yellow brown due to some [Fe(H2O)5(OH)]+2

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Q

Addition of NaOH to Fe3+ solution

A

[Fe(H2O)3(OH)3]

Brown ppt

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Q

Action of excess NaOH on Fe3+ solution

A

No further change

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Q

Addition of NH3 to Fe3+ solution

A

[Fe(H2O)3(OH)3]

Brown ppt

Q

Addition of excess NH3 to Fe3+ solution

A

No further change

Q

Addition of Na2CO3

A

[Fe(H2O)3(OH)3]

Brown ppt

CO2 gas evolved

Q

Al+3 solution

A

[Al(H2O)]+3

Colourless solution

Q

Action of NaOH on Al+3 solution

A

[Al(H2O)3(OH)3]

White ppt

Q

Addition of excess NaOH to Al+3 solution

A

[Al(OH)4]-

Colourless solution

Q

Addition of NH3 to Al+3 solution

A

[Al(H2O)3(OH)3]

White ppt

Q

Addition of excess NH3 to Al+3 solution

A

No further change

Q

Addition of Na2CO3 to Al+3 solution

A

[Al(H2O)3(OH)3]

White ppt

CO2 gas evolved