Name: Chemical Reactions: Their Significance and Representation
Uploaded: 2019-07-19
Duration: 4 min 43 s
Description: A chemical reaction or an equation has a lot of parts in it to convey lots of information. Let us learn what it has to unravel for us through this video.

Question

With the help of an activity, show that iron is more reactive than copper.

Accepted Answer

Activity to show that iron is more reactive than copper:

Experiment:

1. Take three iron nails and clean them by rubbing them with sandpaper.

2. Take two test tubes marked as (T₁) and (T₂).

3. Take about $10 mL$ copper sulphate solution in each test tube.

4. Tie two iron nails with a thread and immerse them carefully in copper sulphate solution in test tube T as shown in the figure.

5. Keep one iron nail separately for comparison.

6. After $25$ minutes, take out the iron nails from the copper sulphate solution.

7. Compare the intensity of the blue colour of copper sulphate solutions in test tubes (T₁ ) and (T₂)
8. Compare the colour of the iron nails dipped in copper sulphate solution with the one kept separately.

Observations:

From the above activity, we will observe that iron nails become brownish in colour and the blue colour of copper sulphate solution fades away.

Conclusion: Thus, this activity shows that iron metal is more reactive than copper. A single displacement reaction takes place. The more reactive iron displaces the less reactive copper from copper sulphate solution and hence, the blue colour of copper sulphate solution fades away.

With the help of an activity, show that iron is more reactive than copper.

Important Questions on Chemical Reactions and Equations

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