How butane can be obtained from salt of propanoic acid? Give equation.

Explanation

To obtain butane from the salt of propanoic acid, we can utilize a method known as Kolbe's electrolysis. Here’s a step-by-step breakdown of the process:

### Step 1: Identify the Salt of Propanoic Acid
The salt of propanoic acid (propionic acid) can be represented as sodium propanoate, which has the formula:
\[ \text{CH}_3\text{CH}_2\text{COO}^- \text{Na}^+ \]

### Step 2: Electrolysis of the Salt
During Kolbe's electrolysis, the sodium propanoate undergoes electrolysis in an aqueous solution. The electrolysis process involves the oxidation of the anions (propanoate ions) at the anode.
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