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प्रश्न
Why should the temperature of the reaction mixture of nitric acid not be allowed to rise above 200oC?
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उत्तर
At high temperature, nitric acid decomposes and the glass apparatus may get damaged. Sodium formed at a higher temperature forms a hard crust which sticks to the walls of the retort.
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संबंधित प्रश्न
Explain the following:
Dilute nitric acid is generally considered a typical acid but not so in its reaction with metals.
Write an equation for the following conversions A, B, C and D.
Name the oxide of nitrogen which turns brown on exposure to air. How is it prepared?
What is the purpose of Conc. H2SO4 in the above preparation?
Give reason for the following:
Conc. Nitric acid renders iron passive.
Choose the correct answer from the option given below :
Nitric acid on standing develops brownish colour which may be attributed to the presence of :
Fill in the blank with appropriate word.
Furning nitric acid is obtained by dissolving an excess of _______ in conc. Nitric acid
Fill in the blank with appropriate word/words.
3 Cu + 8 HNO3 (dilute) → _______ + 4H2O + _________
Complete and balance the following equation:
Cu + HNO3 → NO2 + ________+ _________
Explain the following :
An all glass apparatus is used in the laboratory preparation of nitric acid.
