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प्रश्न
Nitric acid cannot be concentrated beyond 68% by the distillation of a dilute solution of HNO3. State the reason.
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उत्तर
Nitric acid forms a constant boiling mixture with water containing 68% acid. This mixture boils constantly at a constant boiling point without any change in its composition. At this temperature, gas and water vapour escape together. Hence, the composition of the solution remains unchanged. So nitric acid cannot be concentrated beyond 68% by distillation of the dilute solution of HNO3.
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संबंधित प्रश्न
Fill in the blanks using the appropriate words given below :
(Sulphur dioxide, nitrogen dioxide, Nitric oxide, Sulphuric acid)
Hot, concentrated nitric acid reacts with sulphur to form ______________.
Name the gas that is produced in the given cases :
Sulphur is oxidized by concentrated nitric acid.
What is aqua fortis?
Conc. Nitric acid prepared in laboratory is yellow in colour why? How is this colour removed?
Name the Following:
Product obtained by the catalytic oxidation of ammonia.
Write the equation to show the reaction between the following:
Between copper and concentrated nitric acid.
Write the equation of the following reaction.
Sulphur can be converted to sulphuric acid using concentrated nitric acid.
Write equation to show the reaction between the following:
Copper oxide and dilute nitric acid.
Fill in the blank using the appropriate words given below:
Hot, concentrated nitric add reacts with sulphur to form ______.
The diagram given below is a representation of the Industrial preparation of Nitric acid by Ostwald’s process. With respect to the process answer the following questions:
- Write the temperature and the catalyst required during the catalytic oxidation of ammonia.
- Give balanced chemical equation for the reaction occurring duringthe conversion of nitrogen dioxide to nitric acid.
