Tests for Anions

Question 1

how do you test for chloride, bromide and iodide?

Answer 1

• add dilute nitric acid followed by silver nitrate solution

Question 2

what precipitate is formed with a chloride ion?

Answer 2

a WHITE precipitate of silver chloride

Question 3

what precipitate is formed with a bromide ion?

Answer 3

a CREAM precipitate of silver bromide

Question 4

what precipitate is formed with a iodide ion?

Answer 4

an iodide ion give a YELLOW precipitate of silver iodide

Question 5

how do you test for sulphates?

Answer 5

add dilute HCl followed by barium chloride solution.

a white precipitate of barium sulphate means the original compound was a sulphate

Question 6

how do you test for carbonates?

Answer 6

add dilute HCl. if carbonates are present then carbon dioxide will be released (limewater)