Reactions Of Metal Ions

Question 1

Iron (II) + NaOH

Answer 1

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

Green ppt

Question 2

Copper (II) + NaOH

Answer 2

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

Blue ppt

Question 3

Iron (III) + NaOH

Answer 3

[Fe(H2O)3(OH)3] (s)

Brown ppt

Question 4

Aluminium (III) + NaOH

Answer 4

[Al(H2O)3(OH)3] (s)

White ppt

Question 5

Iron (II) + excess NaOH (aq)

Answer 5

No further change - [Fe(H2O)4(OH)2]

Question 6

Copper (II) + excess NaOH (aq)

Answer 6

No further change - [Cu(H2O)4(OH)2] remains

Question 7

Iron (II) + excess NaOH (aq)

Answer 7

No further change - [Fe(H2O)3(OH)3] remains

Question 8

Aluminium (III) + excess NaOH (aq)

Answer 8

[Al(OH)4] - (aq)

Colourless solution

Question 9

Iron (II) + NH3

Answer 9

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

Green ppt

Question 10

Copper (II) + NH3

Answer 10

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

Blue ppt

Question 11

Iron (III) + NH3

Answer 11

[Fe(H2O)3(OH)3] (s)

Brown ppt

Question 12

Aluminium (III) + NH3

Answer 12

[Al(H2O)3(OH)3] (s)

White ppt

Question 13

Iron (II) + excess NH3

Answer 13

No further change - [Fe(H2O)4(OH)2] remains

Question 14

Copper (II) + excess NH3

Answer 14

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

deep blue solution

Question 15

Iron (III) + excess NH3

Answer 15

No further change - [Fe(H2O)3(OH)3]

Question 16

Aluminium (III) + excess NH3

Answer 16

No further change - [Al(H2O)3(OH)3]

Question 17

Iron (II) + Na2CO3

Answer 17

FeCO3 (s)

Green ppt

Question 18

Copper (II) + Na2CO3

Answer 18

CuCO3 (s)

Blue-green ppt

Question 19

Iron (III) + Na2CO3

Answer 19

[Fe(H2O)3(OH)3] (s) + CO2 + H2O

Brown ppt + fizzing

Question 20

Aluminium (III) + Na2CO3

Answer 20

[Al(H2O)3(OH)3] (s) + CO2 + H2O

White ppt + fizzing