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प्रश्न
What is passive iron?
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उत्तर
Iron becomes inert when reacted with nitric acid due to the formation of an extremely thin layer of insoluble metallic oxide, which stops the reaction.
\[\ce{Fe + 6HNO3 -> Fe(NO3)3 + 3H2O + 3NO2}\]
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संबंधित प्रश्न
Ammonia is used in the Ostwald process.
Give the sources of reactants used in this process.
Explain with the help of a balanced equation the brown ring test for nitric acid.
Why is freshly prepared ferrous sulphate solution used for testing the nitrate radical in the brown ring test?
Why is the temperature maintained at 200°C in the above reaction?
Give reason for the following:
Lighting is a blessing in disguise.
Complete and balance the following equation :
SO2 + HNO3 → ______________
Balanced equation of oxidation of carbon with concentrated HNO3
The figure given below illustrates the apparatus used in the laboratory preparation of nitric acid.
- Name A (a liquid), B (a solid), and C (a liquid). (Do not give the formulae.)
- Write an equation to show how nitric acid undergoes decomposition.
- Write the equation for the reaction in which copper is oxidised by concentrated nitric acid.
Complete the table:
| Name of Process | Inputs | Equation | Output |
| Ammonia + Air | Nitric acid |
What is the property of nitric acid which allows it to react with copper?
