Chemistry - Salt Analysis Question with Solution | TestHub

Disodium hydrogen phosphate (Na₂HPO₄) contains phosphate species that yield a characteristic yellow precipitate with AgNO₃ (Ag₃PO₄). It also forms colored phosphate complexes or precipitates with Fe³⁺ (FePO₄ or basic phosphate forms). Therefore, both FeCl₃ and AgNO₃ produce characteristic yellow precipitates. Zn²⁺ and Al³⁺ do not form yellow precipitates with phosphate under normal conditions.