Q.During the identification of group III cations ( $Al^{3+}, Fe^{3+}, Cr^{3+}$ ), $NH_4Cl$ is added before $NH_4OH$ to:

Suppress the concentration of

OH^-

ions

Increase the concentration of

OH^-

ions

Precipitate all cations

Decrease the solubility of chlorides

The correct solution involves applying the fundamental concept to derive the final value step by step...

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Q.During the identification of group III cations (Al3+,Fe3+,Cr3+Al^{3+}, Fe^{3+}, Cr^{3+}Al3+,Fe3+,Cr3+), NH4ClNH_4ClNH4​Cl is added before NH4OHNH_4OHNH4​OH to: