Metal Ions

Question 1

Potassium, Sodium, Lithium - NaOH(aq)

Answer 1

No precipitate

Question 2

Potassium, Sodium, Lithium - NH4OH(aq)

Answer 2

No precipitate

Question 3

Calcium - NaOH(aq)

Answer 3

White precipitate, insoluble in excess

Question 4

Calcium - NH4OH(aq)

Answer 4

White precipitate sometimes, insoluble in excess

Question 5

Zinc - NaOH(aq)

Answer 5

White precipitate, soluble in excess (amphoteric)

Question 6

Zinc - NH4OH(aq)

Answer 6

White precipitate, soluble in excess

Question 7

Iron (II) - NaOH(aq)

Answer 7

Green precipitate, insoluble in excess

Question 8

Iron (II) - NH4OH(aq)

Answer 8

Green precipitate, insoluble in excess

Question 9

Iron (III) - NaOH(aq)

Answer 9

Orange precipitate, insoluble in excess

Question 10

Iron (III) - NH4OH(aq)

Answer 10

Orange precipitate, insoluble in excess

Question 11

Copper - NaOH(aq)

Answer 11

Pale blue precipitate, insoluble in excess

Question 12

Copper - NH4OH(aq)

Answer 12

Pale blue precipitate, soluble in excess to give dark blue solution

Question 13

Calcium solution

Answer 13

Colourless

Question 14

Zinc solution

Answer 14

Colourless

Question 15

Iron (II) solution

Answer 15

Yellow

Question 16

Iron (III) solution

Answer 16

Orange

Question 17

Copper solution

Answer 17

Blue