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प्रश्न
What is passive iron?
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
Write balanced equations for Action of heat on a mixture of copper and concentrated nitric acid
How will you prepare the following from nitric acid?
copper nitrate
Name a metal nitrate which on heating is changed into metal.
Name the catalyst used in Ostwald process.
Give reason for the following:
Commercial nitric acid is yellow in colour, but when it is diluted with water, it turns colourless.
Write balanced equation and name the product formed when :
Sodium hydrogen carbonate is added to nitric acid.
Complete and balance the following equation :
FeSO4 + NO + H2O → ______________
Fill in the blank with appropriate word/words.
Ammonal is a mixture of ________ and __________
Copy and complete the following table relating to important industrial processes output refers to the product of the process not the intermediate steps.
| Name of process | Inputs | Catalyst | Equation for catalysed reaction | Output |
| Haber process | Hydrogen + | |||
|
Ammonia + |
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.
