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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
Ammonia is used in the Ostwald process.
Name the catalyst used in the process.
Name a metal nitrate which on heating is changed into metal.
What are the reactants required for Ostwald process and what are their sources?
Give reason for the following :
Nitric acid usually does not yield hydrogen from acids.
Choose the correct answer from the option given below:
The catalyst used in the manufacture of HNO3 by Ostwald process is
Write balanced equation for the preparation of nitric acid from potassium nitrate.
State the conditions for the oxidation of ammonia to nitrogen monoxide [nitric oxide], in the manufacture of nitric acid by Ostwald's process. Write the balanced equcation for the reaction.
Name the product, catalyst and approximate temperature maintained in Ostwald's process. How is the temperature maintained in the Ostwald's process?
Write the equation for the laboratory preparation of nitric acid from potassium nitrate and concentrated sulphuric acid.
Identify the gas evolved when sulphur is treated with concentrated nitric acid.
