Test For Positive Ions

Question 1

Chemical test of Copper ions (Cu2+)

Answer 1

Add sodium hydroxide , will make a blue precipitate

Question 2

Chemical test for Iron (II)ions Fe2+

Answer 2

Add sodium hydroxide, will make a green precipitate

Question 3

Chemical test for Iron (III) ions Fe3+

Answer 3

Add sodium hydroxide, will make a brown precipitate

Question 4

Chemical test for aluminium ions (Al3+)

Answer 4

Add sodium hydroxide, will make a white precipitate.

Question 5

Chemical test for Magnesium ions (Mg2+)

Answer 5

Add sodium hydroxide, will make a white precipitate (does not dissolve more when NaOH is added)

Question 6

Chemical test for Calcium ions (Ca2+)

Answer 6

Add sodium hydroxide , will make a white precipitate (does not dissolve when more NaOH added)

Question 7

Flame Test for lithium ions (Li+)

Answer 7

Gives a crimson flame

Question 8

Flame test for potassium ions (K+)

Answer 8

Gives a lilacs flame

Question 9

Flame test for sodium ions (Na+)

Answer 9

Gives a yellow flame

Question 10

Flame test for copper ions (Cu2+)

Answer 10

Gives a green flame

Question 11

Flame test for Calcium ions (Cu2+)

Answer 11

Gives a orange-red flame