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प्रश्न
How will you prepare the following from nitric acid?
Aqua regia
उत्तर
A mixture of 3 parts conc. \[\ce{HCl}\] and one part conc. \[\ce{HNO3}\] 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
Write balanced chemical equations for Action of hot and concentrated Nitric acid on copper
Explain the following:
Dilute nitric acid is generally considered a typical acid but not so in its reaction with metals.
Explain the following:
Concentrated nitric add appears yellow when it is left standing in a glass bottle.
What is the type of salt formed when the reactants are heated at a suitable temperature for the preparation of Nitric acid?
Nitric acid cannot be concentrated beyond 68% by the distillation of a dilute solution of HNO3, State the reason.
How will you prepare Aqua regia from nitric acid?
What do you observe when?
Concentrated nitric acid is dropped on a hot surface?
Complete and balance the following equation :
C + HNO3 → ___________
Identify the gas evolved when sulphur is treated with concentrated nitric acid \[\ce{NH3}\].
Write the equation for the reaction of dilute nitric acid with copper.
