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प्रश्न
Give reason for the following:
Aluminum does not react with nitric acid of any concentration.
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उत्तर
Aluminum does not react with nitric acid of any concentration because of the formation of extremely thin, unreactive, protective layer of insoluble metallic oxide on the surface of aluminium which stops further reaction.
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संबंधित प्रश्न
Name a metal nitrate which on heating is changed into metal.
Can we use conc. HCl in place of Conc. H2SO4 ?
Nitric acid cannot be concentrated beyond 68% by the distillation of a dilute solution of HNO3, State the reason.
Give reason for the following:
Commercial nitric acid is yellow in colour, but when it is diluted with water, it turns colourless.
Give reason for the following:
Nitric acid is used in purification of gold.
Give reason for the following :
Nitric acid usually does not yield hydrogen from acids.
Give reason for the following:
Concentrated nitric acid is brown in colour.
Give reason for the following:
Concentrated nitric acid is a stronger oxidizing agent.
What do you observe when?
Concentrated nitric acid is dropped on a hot surface?
Complete and balance the following equation :
HNO3 + FeSO4 + H2SO4 → ______________
