Reactions of Complex Ions in Aqueous Solutions

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28 Terms

1
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what are metal aqua ions

Metal aqua ions are complex ions that only contain water ligands. 

2
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acidity of metal aqua solutions in solution

Metal aqua ions are acidic in solution. 

3
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what is the acidity of metal aqua ion depend on

The acidity of metal aqua ions depends on the charge density of the metal ion. 

 [Fe(H2O)6]3+ is more acidic than [Fe(H2O)6]2+

4
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Fe(II) metal aqua ion molecular equation and colour in aqueous ion

[Fe(H2O6]2+ (aq)

Green s0lution

5
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Cu metal aqua ion molecular equation and colour in aqueous ion

[Cu(H2O)6]2+ (aq)

Blue solution

6
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Fe(III) metal aqua ion molecular equation and colour in aqueous ion

[Fe(H2O)6] yellow solution

7
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Aluminium(III) metal aqua ion molecular equation and colour in aqueous ion

[Al(H2O)6]3+ (aq)

Colourless solution

8
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Iron (II) +NaOH molecular equation and colour

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

Green precipitate (grows brown in air)

9
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Copper (II) + NaOH molecular equation and colour

CU(OH)2(H2O)4

Blue perciptate

10
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Iron (III) + NaOH molecular equation and colour

Fe(OH)3(H2O)3

Brown precipitate

11
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Aluminium (III) + NaOH (aq) molecular equation and colour

Al(OH)3(H2O)3

White precipitate

12
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Iron (II) + excess NaOH(aq) molecular equation and colour

No further change

13
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Copper (II) + excess NaOH(aq) molecular equation and colour

No further change

14
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Iron (III) + excess NaOH(aq) molecular equation and colour

No further change

15
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Aluminium (III) + excess NaOH(aq) molecular equation and colour

Al(OH)3(H2O)3

white precipitate

16
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Special feature about Aluminum Hydroxide

it reacts with both acids and bases, we call it amphoteric. 

<p><span>it reacts with both acids and bases, we call it&nbsp;</span><strong>amphoteric</strong><span>.&nbsp;</span></p>
17
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Iron (II) + NH3(aq) molecular equation and colour

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

Green precipitate (goes brown in air)

18
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Copper(II)+ NH3(aq) molecular equation and colour

CU(OH)2(H2O)4

Blue precipitate

19
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Iron(II) + NH3(aq) molecular equation and colour

Fe(OH)3(H2O)3

Brown precipitate

20
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Aluminium (III) + NH3(aq) molecular equation and colour

Al(OH)3(H2O)3

White precipitate

21
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Iron (II) + excess NH3 (aq) molecular equation and colour

no further change

22
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Copper (II) + excess NH3 (aq) molecular equation and colour

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

Deep blue solution

23
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Iron (III)+ excess NH3 (aq) molecular equation and colour

No further change

24
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Aluminium (III) + excess NH3 (aq) + excess NH3 (aq) molecular equation and colour

No further change

25
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Iron (II) + Na2CO3 (aq) molecular equation and colour

FeCO3 (s)

Green precipitate

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Copper (II) + Na2CO3 (aq) molecular equation and colour

CuCO3 (s)

Blue-Green precipitate

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Iron (III) + Na2CO3 (aq) molecular equation and colour

Fe(OH)3(H2O)3

Brown precipitate

bubbles of CO3

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Aluminium (III) + Na2CO3 (aq) molecular equation and colou

Al(OH)3(H2O)3

White percipitate

Bubbles of CO2