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प्रश्न
How will you prepare the following from nitric acid?
Aqua regia
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उत्तर
A mixture of 3 parts conc. HCl and one part conc. HNO3 is called aqua regia. It gives nascent chlorine and can dissolve gold and platinum [noble metals].
\[\ce{HNO3 + 3HCl -> NOCl +2H2O +2[Cl]}\]
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संबंधित प्रश्न
Explain the following:
Concentrated nitric add appears yellow when it is left standing in a glass bottle.
The nitrate salt which does not give a mixture of NO2 and O2 on heating is ______.
Why is the temperature maintained at 200°C in the above reaction?
Give reason for the following:
Lighting is a blessing in disguise.
What do you observe when?
Hydrogen sulphide is bubbled through conc. HNO3?
What do you observe when?
Conc. HNO3 drops on the skin of a person?
What happen when (Given balanced equation):
Nitric acid is added to washing soda and the resulting gas is passed through a freshly prepared lime water?
Complete and balance the following equation :
HNO3 + FeSO4 + H2SO4 → ______________
Fill in the blank with appropriate word/words.
Ammonal is a mixture of ________ and __________
Write a balanced equation for following :
Laboratory preparation nitric acid.
