Two types of detergents are used as cleansing agents. These are soaps and synthetic detergents. These improve cleansing properties of water. These help in removal of fats which bind other materials to the fabric or skin.

Soaps are the detergents used since long. Soaps used for cleaning purpose are sodium or potassium salts of long chain fatty acids, e.g., stearic, oleic and palmitic acids. Soaps containing sodium salts are formed by heating fat (i.e., glyceryl ester of fatty acid) with aqueous sodium hydroxide solution. This reaction is known as saponification.

When a soap is dissolved in ethanol followed by the evaporation of excess solvent, what type of soap is formed?

Transparent soap

The correct answer is option 1. Transparent soap.

When a soap is dissolved in ethanol followed by the evaporation of excess solvent, the type of soap formed is typically: Transparent soap.

Transparent soaps are produced by dissolving traditional soap (usually made from fats or oils and alkali) in a solvent like ethanol or glycerin. Ethanol helps to dissolve the soap molecules and allows for a more uniform dispersion of soap particles in the final product. After the excess solvent (ethanol) is evaporated, the soap solidifies into a transparent, clear bar. This process results in a soap that has a smooth, transparent appearance and is often prized for its aesthetic appeal and gentle cleansing properties.

The dissolution of soap in ethanol followed by the evaporation of excess solvent typically results in the formation of transparent soap. This process allows for the production of soap bars with a clear, transparent appearance, which is valued for its aesthetic qualities and gentle cleansing properties.