Reaction of aqueous ions

Question 1

Definition of coordinate bonds?

Answer 1

Shared pair of electrons which came from the same atom

Question 2

Definition of ligand?

Answer 2

An ion/molecule with a lone pair of electrons which can form a coordinate bond with transition metal

Question 3

Diagram of [Cu(H2O)6]^2+?

Answer 3

Question 4

Definition of a complex ion?

Answer 4

A central atom/ion surrounded by ligands

Question 5

Colour of the aqueous ion [Cu(H2O)6]^2+?

Answer 5

Blue solution

Question 6

Colour of the aqueous ion [Fe(H2O)6]^2+?

Answer 6

Green solution

Question 7

Colour of the aqueous ion [Fe(H2O)6]^3+?

Answer 7

Purple/brown solution

Question 8

Colour of the aqueous ion [Al(H2O)6]^3+?

Answer 8

Colourless solution

Question 9

Equations the represent [Fe(H2O)6]^2+ acting as an acid? (2)

Answer 9

Question 10

Reaction of [Fe(H2O)6]^2+ with Na2CO3?

Answer 10

Question 11

Observation of [Fe(H2O)6]^2+ with Na2CO3?

Answer 11

Green solution —> Green precipitate

Question 12

Reaction of [Fe(H2O)6]^2+ with NaOH?

Answer 12

Question 13

Observation of [Fe(H2O)6]^2+ with NaOH? Change if in excess?

Answer 13

Green solution —> Green precipitate
No further change

Question 14

Reaction of [Cu(H2O)6]^2+ with Na2CO3?

Answer 14

Question 15

Observation of [Fe(H2O)6]^2+ with NH3? Change if in excess?

Answer 15

Green solution —> Green precipitate
No further change

Question 16

Reaction of [Fe(H2O)6]^2+ with NH3?

Answer 16

Question 17

Reaction of [Cu(H2O)6]^2+ with NaOH?

Answer 17

Question 18

Reaction of [Cu(H2O)6]^2+ with NH3?

Answer 18

Question 19

Reaction of [Cu(H2O)6]^2+ with excess NH3?

Answer 19

Question 20

Observation of [Cu(H2O)6]^2+ with Na2CO3?

Answer 20

Blue solution —> Blue-green precipitate

Question 21

Observation of [Cu(H2O)6]^2+ with NaOH?

Answer 21

Blue solution —> Blue precipitate

Question 22

Observation of [Cu(H2O)6]^2+ with NH3?

Answer 22

Blue solution —> Blue precipitate

Question 23

Observation of [Cu(H2O)6]^2+ with excess NH3?

Answer 23

Blue solution —> Deep-blue solution

Question 24

Reaction of [Cu(H2O)6]^2+ with HCl?

Answer 24

Question 25

Observation of [Cu(H2O)6]^2+ with HCl?

Answer 25

Blue solution ---> yellow solution

Question 26

Reaction of [Fe(H2O)6]^3+ with Na2CO3?

Answer 26

Question 27

Reaction of [Fe(H2O)6]^3+ with NaOH?

Answer 27

Question 28

Reaction of [Fe(H2O)6]^3+ with NH3?

Answer 28

Question 29

Observation of [Fe(H2O)6]^3+ with Na2CO3?

Answer 29

Question 30

Observation of [Fe(H2O)6]^3+ with NaOH?

Answer 30

Question 31

Observation of [Fe(H2O)6]^3+ with NH3?

Answer 31

Question 32

Reaction of [Al(H2O)6]^3+ with Na2CO3?

Answer 32

Question 33

Reaction of [Al(H2O)6]^3+ with NaOH?

Answer 33

Question 34

Reaction of [Al(H2O)6]^3+ with excess NaOH?

Answer 34

Question 35

Reaction of [Al(H2O)6]^3+ with NH3?

Answer 35

Question 36

Observation of [Al(H2O)6]^3+ with Na2CO3?

Answer 36

Question 37

Observation of [Al(H2O)6]^3+ with NaOH?

Answer 37

Question 38

Observation of [Al(H2O)6]^3+ with excess NaOH?

Answer 38

Question 39

Observation of [Al(H2O)6]^3+ with NH3?

Answer 39

Question 40

Al(OH)3=

Answer 40

Al(H2O)3(OH)3

Question 41

Show that Al(OH)3 is amphoteric by 2 equations?

Answer 41

Question 42

Answer 42

Question 43

Suggest a reagent for reaction 3?

Answer 43