How is iodoform prepared from ethanol? Give balanced equation.

Explanation

To prepare iodoform from ethanol, we follow a series of reactions involving iodine and sodium hydroxide. Here’s a step-by-step breakdown of the process along with the balanced equations:

### Step 1: Oxidation of Ethanol
Ethanol (C2H5OH) is partially oxidized to acetaldehyde (CH3CHO) when warmed with iodine in the presence of sodium hydroxide.

**Reaction:**
\[ \text{C}_2\text{H}_5\text{OH} + \text{I}_2 \xrightarrow{\text{NaOH}} \text{CH}_3\text{CHO} + \text{HI} \]

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