Correct Answer - Option 4 : Soap
The correct answer is Soap.
The compound obtained by heating a caustic soda solution with linseed oil can be used as a Soap.
- Soaps are Sodium or Potassium salts of fatty acids.
- They are made from fats or oils.
- The process of making soaps is known as Saponification.
- Formula- Soap contains a negatively charged ion of fatty acid (looks like C17H35COO-) and the positively charged ion of either Sodium (Na+) or Potassium (K+).
- The fatty acid ion is known as the tail of the soap molecule and sodium or potassium ion is known as the head of the soap molecule
- So the formula becomes C17H35COONa ( fatty acid in the composition can change)
- These are also known as stearates of sodium or potassium.
- They fall into the category of salts.
Hard soaps are made using Sodium hydroxides.
- They are manufactured by the hot process of saponification.
- In the hot process, hot oils and lye are combined to initiate saponification.
Soft soaps are made using Potassium hydroxide.
- They are manufactured by the cold process of saponification.