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प्रश्न
Write the equations involved in Ostwald process.
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उत्तर
\[\ce{4NH3 + 5O2 ->[Platinum gangue][800°C] 4NO + 6H2O + Heat }\]
\[\ce{2NO + O2 ->[50°C] 2NO2}\]
\[\ce{4NO2 + O2 + 2H2O -> 4HNO3}\]
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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 oxide of nitrogen which turns brown on exposure to air. How is it prepared?
The chemical used in the brown ring test is ______.
The action of heat on the blue crystalline solid X gives a reddish brown gas Y, a gas which re-lights a glowing splint and leaves a black residue. When gas Z, which has a rotten egg smell, is passed through a solution of X, a black ppt. is formed.
- Identify X, Y and Z.
- Write the equation for the action of heat on X.
- Write the equation between solution X and gas Z.
Brown ring disappear if the test tube is disturbed.
Give two chemical tests for nitric acid.
Complete and balance the following equation :
FeSO4 + NO + H2O → ______________
What is the special feature of the apparatus that is used in the laboratory preparation of nitric acid?
Lead nitrate decomposes on heating to give ______.
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.
