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प्रश्न
How is nitric acid prepared in laboratory?
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उत्तर
In laboratory, nitric acid is prepared by heating a mixture of concentrated sulphuric acid and potassium or sodium nitrate with Conc. H2SO4 at 200°C.
\[\ce{KNO3 + H2SO4 -> KHSO4 + HNO3}\]
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संबंधित प्रश्न
Ammonia is used in the Ostwald process.
Name the oxidising agent used in this process.
Give the chemical name and formula of the substance formed as a brown ring in the test for nitrate radical.
Why is the temperature maintained at 200°C in the above reaction?
Explain with the help of a balanced equation, the brown ring test for nitric acid.
Give reason for the following:
Commercial concentrated nitric acid is yellow in colour, but when it is dilute with water, it turns colourless.
Give one chemical test for nitric acid.
Describe what you see when concentrated nitric acid is added to copper.
When nitric acid is prepared by the action of concentrated sulphuric acid on potassium nitrate. what is the special feature of the apparatus used?
Write a balanced equation for following :
Reaction of ammonia with nitric acid
Explain why only all-glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate.
Explain why nitric acid is kept in a reagent bottle for a long time.
