Question

Glycerol is added to soap. It functions ...
(a) as a filler
(b) to increases leathering
(c) to prevent rapid drying
(d) to make soap granules

Answer 1

Answer: (c) to prevent rapid drying

Glycerol is added to shaving soap to prevent rapid drying while to enhance the leathering property of soap, a gum called rosin Is added to them. It forms sodium rosinate which lathers well. Soap granules are dried miniature soap bubbles.