Example of displacement reaction in Chemical Reactions and Equations – Class 10 Science Experiment

Chapter Name: Chemical Reactions and Equations

Activity Name: Example of displacement reaction in Chemical Reactions and Equations

Activity Description:

Required Items:

1. Two iron nails
2. Sandpaper
3. Two test tubes
4. Copper sulfate solution
5. Water

Step by Step Procedure:

1. Clean two iron nails by rubbing them with sandpaper to remove any impurities or rust.
2. Take two test tubes and label them as “A” and “B.”
3. Pour about 10ml of copper sulfate solution into each test tube.
4. Dip one iron nail into the copper sulfate solution in test tube A and leave it undisturbed for 20 minutes.
5. Keep the other iron nail aside, away from the solution.
6. After 20 minutes, remove the iron nail from test tube A’s copper sulfate solution.
7. Compare the appearance of the iron nail from test tube A with the one kept aside (test tube B).
8. Observe and compare the colors of the solutions in test tubes A and B.

Experiment Observations:

• The iron nail dipped in copper sulfate solution (test tube A) turns brown due to the formation of a copper layer on its surface.
• The blue color of copper sulfate solution in test tube A fades as the copper displaces iron in the solution.

Precautions:

1. Handle the iron nails and glassware with care to avoid any accidents or breakage.
2. Dispose of the copper sulfate solution properly, following safety guidelines for chemical waste disposal.

Lesson Learnt from Experiment:

The experiment illustrates a displacement reaction, where iron displaces copper from copper sulfate solution, leading to the formation of a brown coating on the iron nail and fading of the blue color in the solution.