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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
Name the products formed when dilute HNO3 is added to copper.
Ammonia is used in the Ostwald process.
What is the ratio of ammonia and air taken in this process?
Give the chemical name and formula of the substance formed as a brown ring in the test for nitrate radical.
Give three equations of the reaction to prove that nitric acid is an acid.
What happen when (Given balanced equation):
Limestone reacts with nitric acid?
Write the balanced equation for the equation preparation of nitric acid from potassium nitrate.
The figure given below illustrates the apparatus used in the laboratory preparation of nitric acid:
(i) Name A (a liquid), B( a Solid) and C(a liquid).
(ii) write the balanced chemical equation to show how nitric acid undergoes decomposition.
(iii) Write the balanced chemical equation for the reaction in which copper is oxidized by concentrated nitric acid.
What would you observe in the following case:
Copper is heated with concentrated nitric acid in a hard glass test tube.
Complete the table:
| Name of Process | Inputs | Equation | Output |
| Ammonia + Air | Nitric acid |
From the following list of substances, choose one substance in the case which matches the description given below:
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.
