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प्रश्न
Why is the temperature maintained at 200°C in the above reaction?
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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 the chemical name and formula of the substance formed as a brown ring in the test for nitrate radical.
Mention three important uses of nitric acid. Give the property of nitric acid involved in the use.
Name the Following:
Two coloured nitrates.
Fill in the blank with appropriate word/words.
98% nitric acid is obtained by distilling 68% nitric acid with ________ under ______
Write the equation for the laboratory preparation of nitric acid from potassium nitrate and concentrated sulphuric acid.
Write the equation for the reaction of dilute nitric acid with copper.
Name the gas evolved:
The gas produced on heating sodium nitrate.
What is the special feature of the apparatus that is used in the laboratory preparation of nitric acid?
Why should the temperature of the reaction mixture of nitric acid not be allowed to rise above 200oC?
Balanced equation of oxidation of carbon with concentrated HNO3
