To determine the presence of anion and cation in the given salt
| Experiment | Observation | Inference |
|---|---|---|
| Universal Indicator | Solution turns blue or purple | OH⁻ may be present |
| Confirmatory Test | ||
| Phenolphthalein Test Add phenolphthalein indicator to salt solution | Solution turns pink | OH⁻ 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 OH⁻ ions as anion. The salt is NaOH.