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A protective layer is formed at the surface of aluminium; the phenomenon is called passivation.

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Q: Why Al is neither attacked by dilute sulphuric acid nor dilute nitric acid?
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Related questions

Which reagent can be used to distinguish between dilute nitric acid and dilute sulphuric acid?

Add to several drops of sulfuric acid a few grains of barium chloride; a white precipitate of barium sulfate is obtained.


Which is more acidic sulphuric acid or nitric acid?

Sulfuric acid (H2SO4) is more acidic than nitric acid (HNO3).


Is nitric acid a dilute acid?

Nitric acid can be dilute or concentrated. This is simply a matter of how much of it you have in a given amount of a solution, which is variable.


Relplacement of sulphuric acid?

You can use either the nitric or hydrochloric acid as a replacement of the sulphuric acid.


Is fertillisers a sulphuric acid or a nitric acid or a hydrochloric acid?

Fertilisers contain Sulphuric acid.


Is Mercuric nitrate an acid?

Mercury is not attacked by dilute hydrochloric or sulfuric acid. It reacts with hot nitric acid to form mercuric nitrate, Hg(No 3 )


Is shampoo a nitric or hydrochloric or a sulphuric acid?

hydrochloric


Does copper react with dilute nitric acid?

Cu + 2HNO3 -> Cu(NO3)2 + H2 Ideally, yes. How dilute? In school experiments the nitric acid would be dilute.


What is the acid and alkali used in making ammonium sulphate?

Nitric Acid is used to make Ammonium Nitrate


Is dilute HNO3 an electrolyte?

Nitric acid is an electrolyte.


What do you call it when rain is polluted with nitric of sulphuric acids?

acid rain


What is the name of the substance formed when nitric and sulphuric acids are mixed?

Wassim