Reactions of the Halide Ions

Method

Fill in the observation in the spaces provided in the tables.

1 Tests on aqueous halide ions (part 1):

(i) In a small test tube add about 1 cm depth of a halide ion aqueous solution. Add to it a few drops of dilute nitric acid and about 1 cm depth of silver nitrate(aq).

(ii) To the sample from part (i) add an equal volume of dilute ammonium hydroxide(aq). If no change is seen then add an equal volume of concentrated ammonium hydroxide(aq) to the test tube.


2 Tests on aqueous halide ions (part 2):

In a small test tube add about 1 cm depth of a halide ion aqueous solution. Add to it a few drops of dilute nitric acid and about 1 cm depth of lead nitrate(aq).


3 Tests on solid halide ions:

(i) Add about 0.1g of a solid sample of a halide ion in a test tube to about 10 drops of concentrated sulphuric acid.

(ii) Add about 0.1g of a solid sample of a halide ion in a test tube to about 10 drops of concentrated phosphoric(V) acid.

Test any gases given off with damp litmus papers, eyes and nose.