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प्रश्न
Why is the temperature maintained at 200°C in the above reaction?
उत्तर
The temperature is maintained at 200°C in the above reaction to avoid following problems:
- Nitric acid would decompose at high temperature.
- Potassium or sodium sulphate is formed which will stick to the walls of glass and cannot be removed be easily.
- The glass apparatus may break at high temperature.
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संबंधित प्रश्न
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?
Magnesium nitrate
What is the purpose of Conc. H2SO4 in the above preparation?
Give reason for the following:
Aqua regia dissolves gold and platinum.
Write balanced equation and name the product formed when :
Sodium hydrogen carbonate is added to nitric acid.
Complete and balance the following equation :
C + HNO3 → ___________
Fill in the blank with appropriate word/words.
Ammonal is a mixture of ________ and __________
Give the name of a soluble lead salt and write the eqution for the action of heat on this salt. Write the equation for the preparation of nitric acid from potassium nitrate.
Account for the yellow colour that appears in concentrated nitric acid when it is left standing in an ordinary glass bottle.
