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प्रश्न
Give reason for the following:
Conc. Nitric acid renders iron passive.
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उत्तर
Concentrated nitric acid renders iron passive because of the formation of extremely thin, unreactive, protective layer of insoluble metallic oxide on the surface which stops further reaction.
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संबंधित प्रश्न
Write a balanced chemical equation for the following:
Action of cold and dilute Nitric acid on Copper
What is passive iron?
Name the products formed when dilute HNO3 is added to copper.
Ammonia is used in the Ostwald process.
What is the ratio of ammonia and air taken in this process?
What is the purpose of Conc. H2SO4 in the above preparation?
Can we use conc. HCl in place of Conc. H2SO4 ?
What are the reactants required for Ostwald process and what are their sources?
Write a balanced equation for following :
Reaction of ammonia with nitric acid
Explain why only all-glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate.
Complete the table:
| Name of Process | Inputs | Equation | Output |
| Ammonia + Air | Nitric acid |
