Other tests

Question 1

Test for sulfate ions SO4^2-

Answer 1

Make a solution and add a solution of barium chloride - forms a white precipitate

Question 2

Test for halide ions

Answer 2

Make a solution in dilute nitric acid and then add silver nitrate solution

Question 3

Chloride ions

Answer 3

White precipitate which dissolves in dilute ammonia solution

Question 4

Bromide ions

Answer 4

Cream precipitate which dissolves in concentrated ammonia solution

Question 5

Iodide ions

Answer 5

Yellow precipitate which does not redissolve

Question 6

Test for carbonate ions CO3^2-

Answer 6

Add dilute acid to form colourless gas which turns limewater milky

Question 7

Test for Iodine

Answer 7

Add a few drops of starch to the solution which will then turn blue-black