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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
Name the gas evolved when the following mixtures are heated.
Sodium nitrite and ammonium chloride.
Explain the following:
Dilute nitric acid is generally considered a typical acid but not so in its reaction with metals.
Ammonia is used in the Ostwald process.
Give the sources of reactants used in this process.
Write an equation for the following conversions A, B, C and D.
How will you prepare the following from nitric acid?
Magnesium nitrate
Give the chemical name and formula of the substance formed as a brown ring in the test for nitrate radical.
Give reason for the following:
Nitric acid is used in purification of gold.
Write balanced equation and name the product formed when :
Zinc reacts with dilute nitric acid.
State, what is observe when nitric acid is kept in a reagent bottle for a long time.
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.
