Tests for Stupid Precipitates

Question 1

Test for Carbonates

Answer 1

Add couple drops of dilute acid
Bubble through limewate
co2 released and solution becomes bubbly.

Question 2

Test for Sulfate ions:

Answer 2

Few drops of dilute HCl and Barium Choride solution
WHITE PRECIPITATE

Question 3

Test for Halides

Answer 3

To test for Halides:
Add few drops of dilute NITRIC ACID
Then SILVER NITRATE SOLUTION

Chloride: White
Bromide: Cream
Iodide: Yellow

Question 4

Mnemonic for flame tests

Answer 4

LC COR PL SY CG

Question 5

Mnemonic for other metal precipitate tests

Answer 5

CaW CuB FeG Fe3B Al MgW

Question 6

Other precipitate colors:

Answer 6

Calcium 2 —> White
Copper 2 —> Blue
Iron 2 —> Green
Iron 3 —> Brown
Aluminium 3 —> Colorless
Magnesium 2 —> White