Question

how soap can be prepared​

Answer 1

Answer:

May it helps you....!

Answer 2

Answer:

Materials: warm olive oil (preheated by instructor), 9 M sodium hydroxide solution, food coloring, assorted fragrances, stearic acid

Equipment: tall 250 mL beaker, PLASTIC stirring rod, glass pipets and pipet bulbs

Your instructor has a beaker of olive oil, preheated to 35°C, at the front bench. Pour 10 ml of the warm oil into a tall 250 mL beaker.

Prior to beginning the reaction, choose your fragrance. You may choose one of the following: holiday candy, island coconut, yuzu, energy, lavender, white tea & ginger, fresh cut grass, plumeria, lilac, oatmeal milk & honey, sandalwood, relaxing, cedarwood, cinnamon, amyris, vanilla.

Add 1-2 drops of desired fragrance, using the pipet provided at front bench; do not mix fragrances.

Add 3 ml of 9 M sodium hydroxide solution to the beaker. This is approximately two full dropper squirts.

Use the plastic stirring rod to mix. You must stir for 20-45 minutes; you may choose to take turns with your lab partner. The mixture will slowly become smoother and more opaque; it should thicken to a pudding-like consistency.

After approval by your instructor, add 2-3 drops of desired food coloring. Stir.

Add a dash (approximately 1/8 teaspoon) of stearic acid. This will serve as a hardener for the liquid soap. Stir.

Pour into chosen mold shape. Label with your names and lab section number.

After pouring into the mold, the process will continue on its own. The soap will heat up and liquefy again, then cool off slowly, harden and dry. So, the soap must be left undisturbed for at least 12 hours. You will pick up your finished soap in lab next week.

Report

Experimental Observations

You may make observations after the soap has dried; it will be returned in lab section or lecture.

Does it smell like any soap that you have used?

Wash your hands with your soap. Does it lather like regular soap?

Does it clean your hands as well as regular soap? Explain.

Now rinse your hands thoroughly just in case your soap contains any unreacted sodium hydroxide.