test the damp soap by adding a small piece to a large test tube that is one quar
ID: 534888 • Letter: T
Question
test the damp soap by adding a small piece to a large test tube that is one quarter full of water. the soap to remove excess NaOH and gylcerol. Quality Tests: 6. Test the damp soap by adding a small piece to a large test tube that is about one-quarter full of water. Stopper and shake the tube, and record the height and stability of the foam 7. Add a few crystals of magnesium chloride or calcium chloride, stopper and shake again. Record the height and stability as solution, and some pH paper to determine the pH of your soap. 8. The damp soap can be left to dry overnight on a watch glass. It submitted with the cheesecloth on the watch glass. Be sure to label yo watch glass with your name. Calculate the theoretical yield and percent yield of the reaction. 9. un Up Dilute the filtrate with water, and flush down the lab sink drain.Explanation / Answer
These are the quality test to determine the basicity ( ie it should be mild or weakly basic) decomposition and stability of the soap with respect to time with the help of reagents like MgCl2, CaCl2 and pH strip.
Calculate the theoratical Yield by formula
Theratical yield = (weight of the limiting reagent/molar mass of the limiting reagent) *molar mass of the product
And, Percent yield = (actual yield/ theoratical yield) * 100
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