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Preparation Of Soap
Materials: Water-cooled condenser, 100ml flask, burner, Buchner funnel,ring stand, clamp, boiling ,400ml beaker, margarine, NaOH, ethanol, table salt
procedure:
1. Set up a reflux apparatus as shown.
2. Place 10g of oil in the flask and add to it a solution of 10g of NaOH in a 35ml of mixture having equal volumes of ethanol and
water.
3. Add several boiling chips and Connect the flask to the condenser and gently reflux the mixture over a small flame.
4. Saponification is complete when you obtain a homogeneous solution. (in 30-45 minutes)
5. While the saponification is in progress, prepare a concentrated salt solution by dissolving 50g of NaCl in a 150ml of water in a
400ml beaker.
6. When saponification is complete, extinguish the flame and pour the mixture quickly into the saturated salt solution.
7. Stir the mixture thoroughly for several minutes.
Safety Precuations:
- Wear goggles.
- No loose clothings.
- Watch out for Boiling Chips.
Scientific Principles:
- Homogenous mixture.
- Chemical reaction.
