Continue the qualitative analysis of ions, focusing on specific tests and observations for cations.

Here's the continuation of your mastery summary, picking up from the qualitative analysis of cations.

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IV. Qualitative Analysis of Ions (Continued)

• A. Cations (Basic Ions) - Specific Tests and Observations (Continued)

| Cation | Reagent | Observation to form a solution. | $\text{Fe}^{2+}$ | 1. Add $\text{NaOH}$ (drops, then excess)