Chemistry

Problem

Which of the following ions can be separated by using

\text{NH}_4\text{Cl}

and

\text{NH}_4\text{OH}

? a.

\text{Fe}^{3+}

and

\text{Cr}^{3+}

\text{Cr}^{3+}

and

\text{Co}^{2+}

\text{Cr}^{3+}

and

\text{Al}^{3+}

\text{Al}^{3+}

and

\text{Ba}^{2+}