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प्रश्न
Explain the following:
Concentrated nitric add appears yellow when it is left standing in a glass bottle.
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उत्तर
Although pure concentrated nitric acid is colorless, it appears yellow when left standing in a glass bottle due to the dissolution of reddish brown nitrogen dioxide gas in the acid. Nitrogen dioxide is produced because of the thermal decomposition of a portion of nitric acid.
4HNO3 → 2H2O + 4NO2 + O2
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संबंधित प्रश्न
Write balanced chemical equations for Action of hot and concentrated Nitric acid on copper
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Gas produced in air during lighting.
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Two coloured nitrates.
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When treated with nitric acid which of the following liberate hydrogen?
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.
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Ammonium nitrate, calcium hydrogen carbonate, copper carbonate, lead nitrate, potassium nitrate, sodium carbonate, sodium hydrogen carbonate, zinc carbonate.
A Substance that gives off only oxygen when heated.
