State how addition of nitric acid to acidified FeSO, serves as a test

1.	State how addition of nitric acid to acidified FeSO, serves as a test for the former.
Answer» Nitric acid oxidises iron(II) sulphate to iron (III) sulphate with the liberation of nitric oxide gas. 6FeSO₄ +3H₂SO₄ + 2HNO₃ (dil. ) → 3Fe₂(SO₄ )₃ + 4H₂O +2NO The nitric oxide so formed reacts wtih more of iron(II) sulphate to form nitrosoferrous sulphate, which appears in the form of brown ring at the junction of liquids. FeSO₄ + NO → FeSO₄ .NO

State how addition of nitric acid to acidified FeSO, serves as a test for the former.

Answer»

Nitric acid oxidises iron(II) sulphate to iron (III) sulphate with the liberation of nitric oxide gas.

6FeSO₄ +3H₂SO₄ + 2HNO₃ (dil. ) → 3Fe₂(SO₄ )₃ + 4H₂O +2NO

The nitric oxide so formed reacts wtih more of iron(II) sulphate to form nitrosoferrous sulphate, which appears in the form of brown ring at the junction of liquids.

FeSO₄ + NO → FeSO₄ .NO

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State how addition of nitric acid to acidified FeSO, serves as a test for the former.

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