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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
Name the gas evolved when the following mixtures are heated.
Sodium nitrite and ammonium chloride.
How will you prepare the following from nitric acid?
copper nitrate
How will you prepare the following from nitric acid?
Magnesium nitrate
Name the following :
Gas produced in air during lighting.
Brown ring disappear if the test tube is disturbed.
Give reason for the following:
Aluminum does not react with nitric acid of any concentration.
Write balanced equation and name the product formed when :
Zinc reacts with dilute nitric acid.
Name the compounds required for the laboratory preparation of nitric acid.
Why does pure nitric acid take on a yellowish brown colour when exposed to light?
What happens when
NH3 solution is added to CuSO4 solution drop by drop and then in excess.
