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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
Procedure:
- Add freshly prepared saturated solution of iron (II) sulphate to the aq. solution of nitric acid.
- Now add conc. sulphuric acid carefully from the sides of the test tube so that it does not fall dropwise in the test tube.
- Cool the test tube in water.
- A brown ring appears at the junction of the two liquids.
Reaction:
\[\ce{6FeSO4 + 3H2SO4 + 2HNO3 -> 3Fe2(SO4)3 + 4H2O + 2NO}\]
\[\ce{FeSO4 + NO -> \underset{a brown compound]}{\underset{[Nitroso ferrous sulphate,}{FeSO4*NO}}}\]
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संबंधित प्रश्न
What is the type of salt formed when the reactants are heated at a suitable temperature for the preparation of nitric acid?
How will you prepare the following from nitric acid?
Sodium nitrate
What is the purpose of Conc. H2SO4 in the above preparation?
Write the equations involved in Ostwald process.
What happen when (Given balanced equation):
Nitric acid is added to washing soda and the resulting gas is passed through a freshly prepared lime water?
Complete and balance the following equation :
C + HNO3 → ___________
Choose the correct answer from the option given below :
Nitric acid on standing develops brownish colour which may be attributed to the presence of :
Choose the correct answer from the option given below :
When treated with nitric acid which of the following liberate hydrogen?
Give reason for the following:
Commercial concentrated nitric acid is yellow in colour, but when it is dilute with water, it turns colourless.
Give one chemical test for nitric acid.
Complete the table:
| Name of Process | Inputs | Equation | Output |
| Ammonia + Air | Nitric acid |
