In the ring test of NO 3 – ion, Fe 2+ ion reduces nitrate ion to nitric oxide, which combines with Fe 2+ (aq) ion to form brown complex. Write the reactions involved in the formation of brown ring.

Question

Philoid · Accepted Answer

+ 3Fe²⁺ + 4H⁺ NO + 3Fe²⁺ 2H₂O

[Fe(H₂O)₆]SO₄ + NO [Fe(H₂O)₅NO]SO₄

Thus the complex formed is brown in colour.

In the ring test of NO3– ion, Fe2+ ion reduces nitrate ion to nitric oxide, whichcombines with Fe2+ (aq) ion to form brown complex. Write the reactions involved in the formation of brown ring.

In the ring test of NO₃^– ion, Fe²⁺ ion reduces nitrate ion to nitric oxide, which
combines with Fe²⁺ (aq) ion to form brown complex. Write the reactions involved in the formation of brown ring.