Chapter Name: Chemical Reactions and Equations
Activity Name: Example of displacement reaction in Chemical Reactions and Equations
This experiment demonstrates a displacement reaction between iron and copper sulfate. Iron nails are immersed in copper sulfate solution, and changes in color and appearance are observed.
- Two iron nails
- Two test tubes
- Copper sulfate solution
Step by Step Procedure:
- Clean two iron nails by rubbing them with sandpaper to remove any impurities or rust.
- Take two test tubes and label them as “A” and “B.”
- Pour about 10ml of copper sulfate solution into each test tube.
- Dip one iron nail into the copper sulfate solution in test tube A and leave it undisturbed for 20 minutes.
- Keep the other iron nail aside, away from the solution.
- After 20 minutes, remove the iron nail from test tube A’s copper sulfate solution.
- Compare the appearance of the iron nail from test tube A with the one kept aside (test tube B).
- Observe and compare the colors of the solutions in test tubes A and B.
- 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.
- Handle the iron nails and glassware with care to avoid any accidents or breakage.
- 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.