1.

Concentrated nitric acid can be transported in vessels of aluminium or tin cans. Why ?

Answer»

Solution :Aluminium and Sn is passive to concentrated nitric ACID.
When Al or Sn vessel is FILLED with con. `HNO_(3)`, aprotective oxide FILM of `Al_(2)O_(3)` or `Sn_(2)O_(3)` is formed.
This film prevents further reactions of acid with metal. HENCE `HNO_(3)`can be transported in either aluminium or Sn cans.


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