# The acidic, aqueous solution of ferrous ion forms a brown complex in the presence of NO-3, by the following two steps. Complete and balance the equations :      [Fe(H2O)6]2+ + NO-3 + H+ →………… + [Fe(H2O6)]3+ + H2O [Fe(H2O)6]2+ + ………….. →……. + H2O

3[Fe(H2O)6]2+ + $NO_{3}^{-}$+ 4H+ → NO + 3[Fe(H2O)6]3+ + 2H2O