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प्रश्न
Explain the following:
Concentrated nitric acid appears yellow when it is left standing in a glass bottle.
Explain the following:
When it is left standing in a glass bottle concentrated nitric acid appears yellow.
उत्तर १
Although pure concentrated nitric acid is colourless, it appears yellow when left standing in a glass bottle due to the dissolution of reddish-brown nitrogen dioxide gas in the acid. Nitrogen dioxide is produced because of the thermal decomposition of a portion of nitric acid.
\[\ce{4HNO3 -> 2H2O + 4NO2 + O2}\]
उत्तर २
When exposed to sunshine, cone nitric acid slowly decomposes into nitrogen dioxide gas, which is reddish brown. Nitrogen dioxide gas dissolves in nitric acid, causing it to turn yellow.
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संबंधित प्रश्न
What is the type of salt formed when the reactants are heated at a suitable temperature for the preparation of Nitric acid?
Name the products formed when carbon and conc. nitric acid is heated.
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Ferric nitrate
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Aqua regia dissolves gold and platinum.
What happen when (Given balanced equation) :
Nitric acid is dissolved in large amount of water?
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
Write the equation to show the reaction between the following:
Dilute nitric acid to produce carbon dioxide.
When nitric acid is prepared by the action of concentrated sulphuric acid on potassium nitrate. what is the special feature of the apparatus used?
What is the property of nitric acid which allows it to react with copper?
