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प्रश्न
Name the products formed when dilute HNO3 is added to copper.
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उत्तर
When diluted nitric acid is applied to copper, copper nitrate, water, and the colourless gas nitrogen monoxide are generated.
\[\ce{3Cu + 8HNO3 {(dil.)} -> \underset{Copper nitrate}{3Cu(NO3)2} + 4H2O + 2NO-}\]
Nitrogen monoxide then combines with air, producing reddish-brown emissions of nitrogen dioxide.
\[\ce{2NO + O2 -> \underset{Nitrogen dioxide}{2NO2}}\]
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संबंधित प्रश्न
Name the gas evolved when the following mixtures are heated.
Sodium nitrite and ammonium chloride.
What is passive iron?
Name the products formed when carbon and conc. nitric acid is heated.
How will you prepare the following from nitric acid?
Sodium nitrate
Give the chemical name and formula of the substance formed as a brown ring in the test for nitrate radical.
Why is freshly prepared ferrous sulphate solution used for testing the nitrate radical in the brown ring test?
How is nitric acid prepared in a laboratory?
What do you observe when?
Scrap zinc is heated with conc. HNO3?
What happens when (Given balanced equation):
Nitric acid is added to Kl (aq)?
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
