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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.
How will you prepare the following from nitric acid?
Lead nitrate
What are the reactants required for Ostwald process and what are their sources?
Explain with the help of a balanced equation, the brown ring test for nitric acid.
Complete and balance the following equation :
Fe + HNO3(conc.) → _____________
Fill in the blank with appropriate word/words.
3 Cu + 8 HNO3 (dilute) → _______ + 4H2O + _________
Give reason for the following:
In the laboratory preparation of nitric acid, the mixture of concentrated sulphuric acid and sodium nitatre should not be heated very strongly, above 200°C
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.
Dilute nitric acid is generally considered a typical acid except for its reaction with metals. In what way is dilute nitric acid different from other acids when it reacts with metals?
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 |
