How will you show that the
rusting of iron needs oxygen and moisture at the same time?
Answers
We can say that rusting of iron is generally caused by the above preparation:
When oxygen reacts with iron in the presence of moisture it gives the rust....
Answer:
take three test tubes ABC In test tube A fill it with water and close it with a cork. tke three iron nail.putone iron nail in eachtube and do the following
in test tube B fill it with boiled water and remove dissolved air from it and pour a layer of oil .this prevents the air from coming in contact with the water .
in test tube C fill it with anhydrous calcium chloride and close it with the cork.calcium chloride is dry agent
after a fewdays you will observe thet the iron nail in test tube C will not rust because tge air present in it is dry and wateris not present .in teset tube B the iron nail does not rust because the layer of oil doesnot allow the atmospheric air to come in contact with the nail.in test tube A you will observe that the nail in it has undergone rusting.this is because for rusting to take place it requires the presence of oxygen and water or moisture in air