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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
Write a balanced chemical equation for the following:
Action of cold and dilute Nitric acid on Copper
Give a balanced chemical equation for Laboratory preparation of Nitric acid.
Name the gas evolved when the following mixtures are heated.
Sodium Nitrite and Ammonium Chloride
How will you prepare the following from nitric acid?
copper nitrate
What do you observe when?
Hydrogen sulphide is bubbled through conc. HNO3?
Name the compounds required for the laboratory preparation of nitric acid.
Give one test to distinguish between the following pair of chemicals.
Zinc nitrate solution and calcium nitrate solution
Write the equation for the reaction of dilute nitric acid with copper.
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.
Give a balanced equation for the following reaction:
Copper reacts with concentrated nitric acid.
