Question

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Describe an activity to prove that iron is more reactive than copper. ​

Answer 1

Testing reactivity of metals

Set up the two test tubes as shown in the figure.

Take a clean copper nail and an iron nail.

Place the copper wire in a solution of iron sulphate and the iron nail in a solution of copper sulphate.

Write your observations after sometime.

In which test tube do you find that a reaction has occurred?

image

You will observe that the reaction has occurred in the test tube containing iron nail and copper sulphate solution. Iron takes the sulphate away from copper. You see that a reaction takes place and copper is left by itself. Now, we can say that iron has displaced copper from copper sulphate.

Copper sulphate + Iron---------► Iron sulphate + Copper

In such a reaction, the more reactive metal displaces the less reactive metal. Thus, the above activity shows that iron is more reactive than copper.

Answer 2

Experiment:-

• To show Iron (Fe) is more reactive than Copper (Cu)

Materials required:-

• Copper sulphate solution, Iron nail, test tube.

Method:-

• In the test tube, pour copper sulphate solution. Drop the iron nails it and wait for the reaction to take place.

Observation:-

• Solution turns blue. The nail which is in the contact with the solution turns reddish-brown.

Conclusion:-

• The above process can be understood by the following equation:-

→→Fe+CuSO4➝FeSO4+Cu

• Thsi reaction is a type of displacement reaction.

Hope it helps you ✔️