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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
What is passive iron?
Name the products formed when dilute HNO3 is added to copper.
Ammonia is used in the Ostwald process.
What is the ratio of ammonia and air taken in this process?
Write a balanced equation and name the products formed when cupric oxide reacts with nitric acid.
The nitrate salt which does not give a mixture of NO2 and O2 on heating is ______.
Name the catalyst used in Ostwald process.
Describe the Ostwald's process for the manufacture of nitric acid with labeled diagram.
Explain the following :
An all glass apparatus is used in the laboratory preparation of nitric acid.
The figure given below illustrates the apparatus used in the laboratory preparation of nitric acid.
- Name A (a liquid), B (a solid), and C (a liquid). (Do not give the formulae.)
- Write an equation to show how nitric acid undergoes decomposition.
- Write the equation for the reaction in which copper is oxidised by concentrated nitric acid.
A dilute acid B does not normally give hydrogen when reacted with metals but does give a gas when it reacts with copper. Identify B. Write the equation with copper.
