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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.
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.
\[\ce{4HNO3 ->[\Delta][Sun light] 4NO2 + 2H2O + O2}\]
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संबंधित प्रश्न
Explain the following:
Concentrated nitric add appears yellow when it is left standing in a glass bottle.
Name a metal nitrate which on heating is changed into metal.
Name a solution which absorbs nitric oxide.
What is meant by the following terms?
Fuming nitric acid
How is nitric acid prepared in laboratory?
Why is the temperature maintained at 200°C in the above reaction?
In which ratio reactants are taken in Ostwald process?
Brown ring disappear if the test tube is disturbed.
Write balanced equation and name the product formed when :
Concentrated nitric acid is heated.
Complete and balance the following equation :
Pt + HNO3 + HCl → ___________
