the aim of the experiment is corrosion of iron occurs in presence of water and air write the material required steps of produce and result of experiment
Answers
EXPERIMENT TO PROVE THAT BOTH AIR AND WATER ARE NECESSARY FOR RUSTING OF IRON( AIM)
Take three test tubes A, B and C and place one clean iron nail in each of them. In the test tube A pour some water and close its mouth with the help of a cork. In the test tube B pour boiled water which does not contain dissolved air. Also pour some oil in test tube B to form a layer over boiled water. The layer of oil will prevent the entry of air in water. In the test tube C put some anhydrous calcium chloride and cork it. Anhydrous calcium chloride is drying agent. So, it is added into test tube C to absorb all the moisture present in the air of test tube. Keep these test tubes undisturbed for some days.
After some days, you will observe that the nail in test tube B does not rust because the nail was exposed only to water and no air was present in it. In the same way the nail present in test tube C does not rust because in this tube air is dry and water is not present. But the nail present in test tube A rusts because in test tube A the nail was exposed to both air and water.
This shows that for rusting of iron both air and water are necessary.
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Materials: Test tube , water, iron nail ,stand
steps:
- Take a test tube and put an iron nail in it
- add water to the test tube
- leave the test tube open for a few days
- check again after 3-4 days
Observation:
we can see that the iron in the iron nail has combined with the oxygen in air and water forming iron oxide (FeO)
Results:
We can conclude that Iron gets rusted when left in water in the presence of ait
Bro its for the subject chemistry not physics
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