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प्रश्न
Account for the yellow colour that appears in concentrated nitric acid when it is left standing in an ordinary glass bottle.
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उत्तर
In a glass apparatus nitric acid gets decomposed by sunlight. 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
What is the type of salt formed when the reactants are heated at a suitable temperature for the preparation of Nitric acid?
Explain with the help of a balanced equation, the brown ring test for nitric acid.
Give reason for the following:
Commercial nitric acid is yellow in colour, but when it is diluted with water, it turns colourless.
What happen when (Given balanced equation) :
Nitric acid is dissolved in large amount of water?
Complete and balance the following equation :
Fe + HNO3(conc.) → _____________
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.
The figure given below illustrates the apparatus used in the laboratory preparation of nitric acid.
- Name A (a liquid), B (a solid), and C (a liquid). (Do not give the formulae.)
- Write an equation to show how nitric acid undergoes decomposition.
- Write the equation for the reaction in which copper is oxidised by concentrated nitric acid.
What is the property of nitric acid which allows it to react with copper?
