Displacement

Reactions

Using chlorine and bromine in this reaction can produce a nauseating fume. Extreme caution should be taken when handling Chlorine and Bromine.

Safety goggles and gloves must be worn while handling these chemicals

For this experiment you need:

- Potassium iodide

- Potassium Bromide

- Potassium Chloride

- Iodine

- Chlorine

- Bromine

- Sampling tile

- A4 paper

Place the sampling tile on the A4 paper.

Label one row potassium chloride, potassium bromide, potassium iodide.

Label one column Chlorine, Bromine and Iodine.  

Fill up each dip half way with the potassium compounds.

You should have something similar to the image on the right.

Now add the pure substances in the columns.

You should see a colour change in some of the dips.

Questions

1. State what is meant by a displacement reaction

2. what are 3 observations during any chemical reaction

3. What is one during this chemical reaction

4. Why was there a colour change in some but not all of them

5. Order the halogens from most to least reactive

6. Write the worded equations for the displacement reactions which occurred.

7.Predict what would happen is chlorine water was added to lithium fluoride. Explain your answer.