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प्रश्न
why is freshly prepared ferrous sulphate solution used for testing the nitrate radical in the brown ring test?
उत्तर
Freshly prepared ferrous sulphate solution is utilised since exposure to air (e.g., keeping in a reagent bottle) causes it to oxidise to ferric sulphate solution. The \[\ce{[NO]}\] molecule will not form an additive compound with ferric sulphate; hence, the brown ring test will not be successful.
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संबंधित प्रश्न
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Gas produced in air during lighting.
Name the Following:
Product obtained by heating concentrated nitric acid.
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Fill in the blank with appropriate word/words.
3 Cu + 8 HNO3 (dilute) → _______ + 4H2O + _________
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Give one chemical test for nitric acid.
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