COMEDK · Chemistry · 33. Practical Chemistry
The brown ring test for nitrates depends on
- A the reduction of nitrate to nitric oxide
- B oxidation of nitric oxide to nitrogen dioxide
- C reduction of ferrous sulphate to iron
- D oxidising action of sulphuric acid
Answer & Solution
Correct Answer
(A) the reduction of nitrate to nitric oxide
Step-by-step Solution
Detailed explanation
The brown ring is appeared due to formation of a brown complex between nitric oxide and \(\mathrm{Fe}^{2+}\) ion. This nitric oxide is formed as a result of reduction of nitrate. Brown ring test for nitrates depends on reduction of nitrate to nitric oxide.
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