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प्रश्न
Explain the following:
Concentrated nitric acid appears yellow when it is left standing in a glass bottle.
Explain the following:
When it is left standing in a glass bottle, concentrated nitric acid appears yellow.
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उत्तर १
Although pure concentrated nitric acid is colourless, it appears yellow when left standing in a glass bottle due to the dissolution of reddish-brown nitrogen dioxide gas in the acid. The thermal decomposition of a portion of nitric acid produces nitrogen dioxide.
\[\ce{4HNO3 -> 2H2O + 4NO2 + O2}\]
उत्तर २
When exposed to sunshine, conc. nitric acid slowly decomposes into nitrogen dioxide gas, which is reddish brown. Nitrogen dioxide gas dissolves in nitric acid, causing it to turn yellow.
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संबंधित प्रश्न
Name the products formed when dilute HNO3 is added to copper.
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Name the Following:
Product obtained by heating concentrated nitric acid.
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Fuming nitric acid
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Conc. Nitric acid renders iron passive.
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Nitric acid is added to washing soda and the resulting gas is passed through a freshly prepared lime water?
Fill in the blank with appropriate word/words.
98% nitric acid is obtained by distilling 68% nitric acid with ________ under ______
What do you see when concentrated nitric acid is added to copper?
What happens when
NH3 solution is added to CuSO4 solution drop by drop and then in excess.
