During the preparation of soap the addition of common salt allows the precipitation of soap . Expalin the principle involved (Soap is the sodium salt of carboxylic acid ).

Explanation

To explain the principle involved in the precipitation of soap during its preparation with the addition of common salt, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Soap Formation**:
- Soap is formed through a process called saponification, where a fat or oil reacts with a strong base (like sodium hydroxide) to produce glycerol and soap, which is the sodium salt of a fatty acid (carboxylic acid).

2. **Role of Common Salt**:
...