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प्रश्न
Why does pure nitric acid take on a yellowish brown colour when exposed to light?
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उत्तर
Yellowish brown colour of nitric acid is due to the presence of nitrogen dioxide formed due to thermal decomposition of nitric acid.
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संबंधित प्रश्न
Write a balanced chemical equation for the following:
Action of cold and dilute Nitric acid on Copper
Ammonia is used in the Ostwald process.
Why is quartz used in this process?
Describe the Ostwald's process for the manufacture of nitric acid with labeled diagram.
Give reason for the following:
Nitric acid is used in purification of gold.
Give reason for the following:
Aqua regia dissolves gold and platinum.
Give reason for the following :
Nitric acid usually does not yield hydrogen from acids.
What happen when (Given balanced equation) :
Nitric acid is dissolved in large amount of water?
What do you see when concentrated nitric acid is added to copper?
Name (formula is not acceptable) the gas produced in the following reaction:
On warming ammonium sulphate with sodium hydroxide solution.
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.
