Question

"More reactive element displaces less reactive element" prove this statement with an activity

Answer 1

Here's the activity you are looking for

Single displacement reaction

PROCEDURE:
1) Clean two iron nails by rubbing them with sand paper so that their colour appears grayish.

2) Take some copper sulphate solution in two different test tubes.

3) Clamp the test tubes to different stands.

4) Tie one nail using a thread and hang in one test tube. 

5) Keep the other nail in a Petri dish for comparison after the experiment.

6) Keep the two test tubes undisturbed for about 15 minutes.

7) Remove the iron nail immersed in the copper sulphate solution and put it in the Petridish.

OBSERVATION:

1) There is a brown coating on the iron nail dipped in the copper sulphate solution. Whereas the iron nail placed in the Petri dish shows the grayish colour of iron as it was initially.

2)The colour of the solution of copper sulphate in which the iron nail was dipped changes to light greenish, whereas the colour of copper sulphate solution in the other test tube does not change and remains as it was initially.

INFERENCES:

1) The brown coating on the iron nail shows that copper is deposited on the iron nail by displacing iron.

2) The greenish colour of the solution in the test tube shows that Fe2+ ions are present in the solution.

3)This shows that iron is more reactive than copper.

4) This is a single displacement reaction in which copper has been displaced from iron from copper sulphate solution.

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