Why ethanoic KOH and not aqueous
KOH is used in the isocyanide test of aniline?

Explanation

### Step-by-Step Solution

1. **Understanding the Isocyanide Test**: The isocyanide test is a qualitative test used to identify primary amines, such as aniline. In this test, the amine reacts with a strong base to form an isocyanide.

2. **Role of KOH**: Potassium hydroxide (KOH) is a strong base that provides hydroxide ions (OH⁻) necessary for the reaction to occur. However, the strength of the base is crucial for the reaction to proceed efficiently.

3. **Difference Between Ethanoic KOH and Aqueous KOH**:
- **Aqueous KOH**: When KOH is dissolved in water, it dissociates to form K⁺ and OH⁻ ions. While it is a strong base, the concentration of hydroxide ions in an aqueous solution is limited by the solubility and the presence of water.
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