Question

The Sodium or potassium salt of a ___ fatty acid is called ___.

• A. long chain
• B. soap

Answer 1

1. Detergent is a substance that has cleansing properties in water.
2. Detergent is common soap.
3. Soap is defined as the Sodium and Potassium salts of long-chain fatty acids.
4. The general chemical formula of fatty acid is$\mathbf{RCOOH}$.
5. Therefore, the sodium or potassium salt of a long-chain fatty acid is called soap.