MATERIALS REQUIRED

Apparatus: Test tubes, beaker.

Chemical compound: Sodium sulphate solution, barium chloride solution

THEORY

1. Sodium sulphate and barium chloride being initially colourless.
2. On mixing two solutions, a white coloured compound barium sulphate is found.
3. Barium sulphate being insoluble in water get precipitated on the surface of the solution

4. In this reaction, both the reactants, i.e., sodium sulfate and barium chloride exchange ions. Hence, this type of exchange of ion called as a double displacement reaction.

The chemical reaction can be given as follow :

PROCEDURE

1. Take 10 ml of sodium sulphate and barium chloride solution in a clean, dry test tube and mark it as ‘A' and ‘B.’

2. Empty the solutions of test tubes ‘A’ and ‘B’ inside a beaker.

3. With the help of a glass rod, stir the mixture kept in a beaker.

4. Record your observation.

OBSERVATIONS

The reaction of sodium sulphate with barium chloride gives a white precipitate of barium sulphate, and sodium chloride is formed as a product of the reaction.

RESULT

On intermixing the solutions of sodium sulphate and barium chloride, a double displacement, reaction occur. In this reaction sodium sulphate reacts with barium chloride to form new products, barium sulphate (white ppt) and sodium chloride are formed.

PRECAUTIONS

1. Clean the apparatus properly before using them.

2. Test tubes, beaker and glass rod should be rinsed properly before use.

3. An equal amount of sodium sulphate and barium chloride solutions should be used.