The main difference between bathing and washing soap is

Options

A. bathing soap are potassium salts of fatty acids washing soaps are sodium salt of fatty acids .
B. bathing soaps are sodium salt of fatty acids while washing soaps are potassium salt of fatty acids
C. bathing soaps are cationic in nature while washing soaps are anionic
D. bathing soaps are calcium salts of fatty acids while washing soaps are anionic

Answer

To determine the main difference between bathing soap and washing soap, we need to analyze the properties and compositions of each type of soap.

### Step-by-Step Solution:

1. **Understanding Soap Composition**:
- Soaps are salts of fatty acids formed by the reaction of an alkali (like sodium hydroxide or potassium hydroxide) with fats or oils.

2. **Identifying Bathing Soap**:
- Bathing soaps are primarily made from **potassium salts of long-chain fatty acids**. This composition makes them softer and more suitable for skin use, as they are milder and less irritating.

3. **Identifying Washing Soap**:
- Washing soaps, on the other hand, are made from **sodium salts of long-chain fatty acids**. This composition results in a harder soap that is effective for cleaning purposes, as it can produce more lather and is better at removing dirt and grease.

4. **Comparing Properties**:
- Bathing soaps are generally softer and free from residual alkali, making them gentle on the skin.
- Washing soaps are harder and may contain some residual alkali, which contributes to their cleaning power but can be harsher on the skin.

5. **Conclusion**:
- The main difference between bathing and washing soap is that bathing soaps are potassium salts of fatty acids, while washing soaps are sodium salts of fatty acids.

### Final Answer:
The main difference between bathing and washing soap is that **bathing soaps are potassium salts of fatty acids, while washing soaps are sodium salts of fatty acids**. Therefore, the correct option is **A**.

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