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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.
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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.
Name the products formed when dilute HNO3 is added to copper.
Give two chemical equations for the following:
Nitric acid showing as acidic character.
What happens when (Given balanced equation) :
Sulphar is added to hot and conc. HNO3?
What happens when (Given balanced equation):
Nitric acid is added to Kl (aq)?
Complete and balance the following equation :
Fe + HNO3(conc.) → _____________
Fill in the blank with appropriate word/words.
Aqua regia is a mixture of _______ and________
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
Why should the temperature of the reaction mixture of nitric acid not be allowed to rise above 200oC?
Explain why only all-glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate.
