The brown ring test for is due to the formation of the complex ion with formula:

CHEMISTRY · Single correct · GCSE · Chemistry · Chemical Analysis · Chemical Analysis

Problem

The brown ring test for

NO_3^-

is due to the formation of the complex ion with formula: (1)

[Fe(H_2O)_6]^{2+}

(2)

Fe[NO(CN)_5]^{2-}

(3)

[Fe(H_2O)_5NO]^{2+}

(4)

[Fe(H_2O)(NO)_5]^{2+}