If NH4OH in presence of NH4Cl is added to a solution containing Al2(SO4)3 and MgSO4, which of the fo — Qualitative and Quantitative Analysis Chemistry Question

💡 Solution & Explanation

NH4Cl suppresses the ionization of NH4OH (common ion effect). The resulting low OH- concentration is sufficient to exceed the Ksp of Al(OH)3 (precipitates) but not Mg(OH)2.