question_answer

The only cations present in a slightly acidic solution are \[F{{e}^{3+}},\ Z{{n}^{2+}}\] and \[C{{u}^{2+}}\]. The reagent that when added in excess to this solution would identify and separate \[F{{e}^{3+}}\] in one step is  [IIT 1997]

A) 2M HCl

B) \[6M\ N{{H}_{3}}\]

C) \[6M\ NaOH\]

D) \[{{H}_{2}}S\] gas