Which of the following pairs of cations can be separated by adding and to the mixture?

CHEMISTRY · Single correct · ICSE · Chemistry · Analytical Chemistry · Analytical Chemistry

Problem

Which of the following pairs of cations can be separated by adding

NH_4Cl

and

NH_4OH

to the mixture? (1)

Fe^{3+}

Al^{3+}

(2)

Cr^{3+}

Ni^{2+}

(3)

Al^{3+}

Cr^{3+}

(4)

Fe^{3+}

Cr^{3+}