Reactions in aqueous solutions

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  • Created by: LMKing
  • Created on: 18-04-16 19:34
Lewis Acid
Electron pair acceptor
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Lewis Base
Electron pair donor (Ligand)
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Fe (II) aqua ion
[Fe(H2O)6]2+ GREEN
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Co (II) aqua ion
[Co(H2O)6]2+ PINK
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Cu (II) aqua ion
[Cu(H2O)6]2+ BLUE
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Fe (III) aqua ion
[Fe(H2O)6]3+ VIOLET
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Al (III) aqua ion
[Al(H2O)6]3+ COLOURLESS
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Cr (III) aqua ion
[Cr(H2O)6]3+ RUBY RED
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Action of limited NH3 or NaOH 2+ ions
M(H2O)4(OH)2: Cu2+ Blue ppt, Co2+ Blue ppt, Fe2+ green ppt
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Action of limited NH3 or NaOH 2+ ions
M(H2O)3(OH)3: Al3+ White ppt, Cr3+ Green ppt, Fe2+ Brown ppt
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Amphoteric
Will dissolve/react with both acids and bases
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Action of Excess NaOH
Chromium (III) and Aluminum (III) ppts will dissolve. [Cr(OH)6]3- is a green solution & [Al(OH)6]3- is a colourless solution
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Action of Excess NH3
In Copper (II), Cobalt (II) and Chromium (III) ligand substitution occurs: [Cr(NH3)6]3+ Purple Solution, [Co(NH3)6]2+ Pale yellow solution & [Cu(NH3)4(H20)2]2+ Deep Blue solution.
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Action of [CO3]2- ions
M2+ ions form MCO3 ppt: CuCO3 Blue-green ppt, CoCO3 Pink ppt & FeCO3 Green ppt. Mn3+ form hydroxide ppts.
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Action of Cl- ions
Ligand substitution occurs in Copper (II) and Cobalt (II): [CuCl4]2- is a blue solution & [CoCl4]2- is a yellow solution but may look green.
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Vanadium (V)
[VO2]+ YELLOW
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Vanadium (IV)
[VO]2+ BLUE
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Vanadium (III)
V3+ GREEN
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Vanadium (II)
V2+ PURPLE
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Other cards in this set

Card 2

Front

Lewis Base

Back

Electron pair donor (Ligand)

Card 3

Front

Fe (II) aqua ion

Back

Preview of the front of card 3

Card 4

Front

Co (II) aqua ion

Back

Preview of the front of card 4

Card 5

Front

Cu (II) aqua ion

Back

Preview of the front of card 5
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