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प्रश्न
Explain why only all-glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate.
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उत्तर
The glass apparatus is purposely used because the nitric acid produced reacts with practically every material, including cork and rubber. Glass is the lone exception. Nitric acid in its pure form is unstable when exposed to sunlight.
\[\ce{4HNO3 ->[\Delta][Sun light] 4NO2 + 2H2O + O2}\]
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संबंधित प्रश्न
Explain the following:
Dilute nitric acid is generally considered a typical acid but not so in its reaction with metals.
Give two chemical equations for the following:
Nitric acid acting as the oxidizing agent.
What do you observe when?
Concentrated nitric acid is dropped on a hot surface?
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Aqua regia is a mixture of _______ and________
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.
Write the balanced equation for the equation preparation of nitric acid from potassium nitrate.
Give the name of a soluble lead salt and write the equation for the action of heat on this salt.
Describe what you see when concentrated nitric acid is added to copper.
Write the equation for the laboratory preparation of nitric acid from potassium nitrate and concentrated sulphuric acid.
What is the property of nitric acid which allows it to react with copper?
