To determine the presence of anion and cation in the given salt
| Experiment | Observation | Inference |
|---|---|---|
| Confirmatory Test | ||
| Ammonium Molybdate Test Acidify with conc. HNO₃ and add ammonium molybdate solution, boil | Canary yellow precipitate is formed | PO₄³⁻ is confirmed |
| Experiment | Observation | Inference |
|---|---|---|
| Flame test in a clean non-luminous flame | Intense yellow flame | Na⁺ may be present |
| Confirmatory Test | ||
| Zinc Uranyl Acetate Test Take a filtrate and add zinc uranyl acetate solution | Yellow crystalline precipitate | Na⁺ is confirmed |
The given salt contains Na⁺ ions as cation and PO₄³⁻ ions as anion. The salt is (Na)₃PO₄.