Test for Anions

Question 1

Carbonate Ions

Answer 1

Add dilute acid, then test for carbon dioxide gas
Effervescene seen, CO2 produced.

Question 2

Chloride Ions

Answer 2

Acidify with dilue nitric acid, then add aqueous silver nitrate.
White precipitate is formed

Question 3

What is the test for Bromide Ions

Answer 3

Acidify with dilute nitric acid, then add aqueous silver nitrate
Cream Precipitate is formed

Question 4

Iodide Ions

Answer 4

Acidify with dilute nitric acid, then add aqueous silver nitrate
Yellow Precipitate

Question 5

Nitrate Ions

Answer 5

Add aqueous sodium hydroxide, then aluminum foil, warm carefully
Ammonia Gas Produced (turns damp red litmus blue)

Question 6

Sulfate Ions

Answer 6

Acidify with dilute nitric acid, then add aqueous Barium Nitrate.
A white precipitate is formed

Question 7

Sulfite Ions

Answer 7

Add a small volume of acidified aqueous
potassium manganate(VII)
The acidified aqueous
potassium manganate (VII) changes
colour from purple to colourless