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प्रश्न
Explain with the help of a balanced equation, the brown ring test for nitric acid.
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उत्तर
Brown ring test -
Nitric acid in a test tube is taken and then and then freshly prepared ferrous sulphate solution is added. Concentrated H2SO4 is then added carefully down the sides of the test tube, dark brown ring is formed at the junction of two layers.
\[\ce{6FeSO4 + 3H2SO4 + 2HNO3 -> 3Fe2(SO4)3 + 2NO + 4H2O}\]
\[\ce{FeSO4 + NO + 5H2O -> \underset{\text{Hydrated nitrosoferrous sulphate(brown ring)}}{[Fe(NO)(H2O)5]SO4}}\]
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संबंधित प्रश्न
Explain the following:
Concentrated nitric add appears yellow when it is left standing in a glass bottle.
Give two chemical equations for the following:
Nitric acid acting as the oxidizing agent.
Name the following :
Gas produced in air during lighting.
Choose the correct answer from the option given below :
Nitric acid on standing develops brownish colour which may be attributed to the presence of :
Fill in the blank with appropriate word/words.
Ammonal is a mixture of ________ and __________
Why does pure nitric acid take on a yellowish brown colour when exposed to light?
What would you observe in the following case:
Copper is heated with concentrated nitric acid in a hard glass test tube.
Explain the following:
Concentrated nitric acid appears yellow when it is left standing in a glass bottle.
Explain the following :
An all glass apparatus is used in the laboratory preparation of nitric acid.
Write a balanced equation for following :
Reaction of ammonia with nitric acid
