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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
How will you prepare the following from nitric acid?
copper nitrate
Name the process used for the manufacture of nitric acid.
Give reason for the following:
Commercial nitric acid is yellow in colour, but when it is diluted with water, it turns colourless.
What do you observe when?
Concentrated nitric acid is dropped on a hot surface?
What do you observe when?
Conc. HNO3 drops on the skin of a person?
Complete and balance the following equation :
C + HNO3 → ___________
Choose the correct answer from the option given below :
Concentrated nitric acid oxidises phosphorus to :
Give the name of a soluble lead salt and write the eqution for the action of heat on this salt. Write the equation for the preparation of nitric acid from potassium nitrate.
Copy and complete the following table relating to important industrial processes output refers to the product of the process not the intermediate steps.
| Name of process | Inputs | Catalyst | Equation for catalysed reaction | Output |
| Haber process | Hydrogen + | |||
|
Ammonia + |
Nitric acid |
Name the gas evolved:
The gas produced on heating sodium nitrate.
