KCET2008ChemistryPractical Chemistry
In the brown ring test, the brown colour of the ring is due to
Options
- Aferrous nitrate
- Bferric nitrate
- Ca mixture of NO and NO ₂
- Dnitrosoferrous sulphate
Correct answer
D. nitrosoferrous sulphate
Step-by-step solution
Ring test : To the nitrate salt, add freshly prepared FeSO ₄ solution and then conc H ₂ SO ₄ carefully by the sides of test-tube. A dark brown ring of ferrous nitrososulphate is formed.