1. Fatty acids are carboxylic acids that contain 4-28 carbon in the molecule.
  2. Soap is the sodium or potassium salt of fatty acid.
  3. The general formula of soap is RCOONa+ or RCOOK+, where R is an alkyl group that has long carbon chain.
  4. Image below shows the general structure of a soup molecule.
  5. Image below shows the example of a soup molecule (Sodium Stearate)