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प्रश्न
Give reason for the following:
Aqua regia dissolves gold and platinum.
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उत्तर
\[\ce{3HCl + HNO3 -> 2H2O + NOCl + 2[Cl]}\]
Gold in Aqua regia :
\[\ce{Au + 4[Cl] -> AuCl3}\]
Platinum in Aqua regia :
\[\ce{Pt + 4[Cl] -> PtCl4 }\]
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संबंधित प्रश्न
How will you prepare the following from nitric acid?
Lead nitrate
Give the chemical name and formula of the substance formed as a brown ring in the test for nitrate radical.
Name the Following:
Gas obtained by treating manganese with 1% nirtric acid.
Name the Following:
Salt referred to as chile saltpeter.
How is nitric acid prepared in a laboratory?
What are the reactants required for Ostwald process and what are their sources?
Give three equations of the reaction to prove that nitric acid is an 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?
Scrap zinc is heated with conc. HNO3?
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 |
