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प्रश्न
Explain why only all-glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate.
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उत्तर
The glass apparatus is purposely used because the nitric acid produced reacts with practically every material, including cork and rubber. Glass is the lone exception. Nitric acid in its pure form is unstable when exposed to sunlight.
\[\ce{4HNO3 ->[\Delta][Sun light] 4NO2 + 2H2O + O2}\]
संबंधित प्रश्न
How will you prepare the following from nitric acid?
Ferric nitrate
Name a metal nitrate which on heating is changed into metal oxide.
Name the following :
Gas produced in air during lighting.
Name the Following:
Salt referred to as chile saltpeter.
What happens when (Given balanced equation):
Nitric acid is added to Kl (aq)?
Complete and balance the following equation :
HNO3 + FeSO4 + H2SO4 → ______________
Choose the correct answer from the option given below :
Nitric acid on standing develops brownish colour which may be attributed to the presence of :
Choose the correct answer from the option given below :
Concentrated nitric acid oxidises phosphorus to :
When nitric acid is prepared by the action of concentrated sulphuric acid on potassium nitrate. what is the special feature of the apparatus used?
Account for the yellow colour that appears in concentrated nitric acid when it is left standing in an ordinary glass bottle.
