Which salt of carboxylic acid will be required to prepare ethane by sodalime decarboxylation? Give equation for the reaction.

Explanation

To prepare ethane by sodalime decarboxylation, we need to use the salt of a carboxylic acid that contains three carbon atoms. The carboxylic acid we will use is propanoic acid, which has the formula CH3CH2COOH. The corresponding salt of propanoic acid is sodium propanoate (CH3CH2COONa).

### Step-by-step Solution:

1. **Identify the required carboxylic acid**:
- To produce ethane (C2H6), we need a carboxylic acid that has three carbon atoms. This is because during decarboxylation, one carbon is released as carbon dioxide (CO2). Therefore, we need a carboxylic acid with three carbons, which is propanoic acid (CH3CH2COOH).

2. **Write the formula for the salt**:
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