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प्रश्न
Why is freshly prepared ferrous sulphate solution used for testing the nitrate radical in the brown ring test?
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उत्तर
We use freshly prepared ferrous sulphate solution because exposure to air, such as storing it in a reagent bottle, causes it to oxidise to ferric sulphate solution. The [NO] molecule will not form an additive compound with ferric sulphate; hence, the brown ring test will not be successful.
संबंधित प्रश्न
Write a balanced equation for the action of heat on a mixture of copper and concentrated nitric acid.
Give two chemical equations for the following:
Reactions of nitric acid with non-metals.
How will you prepare the following from nitric acid?
Ferric nitrate
Name a solution which absorbs nitric oxide.
Give the chemical name and formula of the substance formed as a brown ring in the test for nitrate radical.
Why is freshly prepared ferrous sulphate solution used in the ring test?
How will you prepare Aqua regia from nitric acid?
The first step in the manufacture of nitric acid is the catalytic oxidation of ammonia. What is the name of the catalyst?
Explain the following :
An all glass apparatus is used in the laboratory preparation of nitric acid.
Explain why nitric acid is kept in a reagent bottle for a long time.
