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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
Write a balanced equation and name the products formed when zinc reacts with dilute nitric acid.
Name a metal nitrate which on heating is changed into metal oxide.
Name the Following:
Salt referred to as chile saltpeter.
Write the equations involved in Ostwald process.
Explain with the help of a balanced equation, the brown ring test for nitric acid.
Fill in the blank with appropriate word/words.
Aqua regia is a mixture of _______ and________
Give reason for the following:
In the laboratory preparation of nitric acid, the mixture of concentrated sulphuric acid and sodium nitatre should not be heated very strongly, above 200°C
State, what is observe when nitric acid is kept in a reagent bottle for a long time.
What would you observe in the following case:
Copper is heated with concentrated nitric acid in a hard glass test tube.
