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प्रश्न
The figure given below illustrates the apparatus used in the laboratory preparation of nitric acid:
(i) Name A (a liquid), B( a Solid) and C(a liquid).
(ii) write the balanced chemical equation to show how nitric acid undergoes decomposition.
(iii) Write the balanced chemical equation for the reaction in which copper is oxidized by concentrated nitric acid.
उत्तर
(i) A = Sulphuric acid, B = potassium nitrate, C= nitric acid
(ii) \[\ce{4HNO3 -> 4NO2 + 2H2O + O2}\]
(iii) \[\ce{Cu + 4HNO3 ->[\Delta] Cu(NO3)2 + 2NO2 + 2H2O}\]
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संबंधित प्रश्न
Explain the following:
Concentrated nitric add appears yellow when it is left standing in a glass bottle.
What is passive iron?
Ammonia is used in the Ostwald process.
Name the oxidising agent used in this process.
Ammonia is used in the Ostwald process.
What is the ratio of ammonia and air taken in this process?
How will you prepare the following from nitric acid?
Sodium nitrate
Name the Following:
Two coloured nitrates.
Give reason for the following:
In laboratory preparation of nitric acid all the apparatus including cork should be made up of glass.
Complete and balance the following equation :
Fe + HNO3(conc.) → _____________
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
Complete and balance the following equation:
Cu + HNO3 → NO2 + ________+ _________
