Please verify my post-lab answers if they are correct Thank you! Lab: Preparatio

Question

Please verify my post-lab answers if they are correct Thank you!

Lab: Preparation of Soap lab Saponification.

Overall Process:

triglyceride + 3 KOH ----> 3 moles of Potassium soap + glycerol

potassium soap + NaCl -----> sodium soap + KCl

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1) What exactly constitutes a simple soap? ***(Not sure how to answer this one)***

2) What was the name of the base used to saponify the fat in this experiment? KOH

3) What was the name of the alcohol was produced following the saponification of the lard? Glycerol

4) Explain how the potassium soap you initially made was converted into sodium soap? I know Na ion replaces the K ion but not sure how to word it out.

5) What functional group is prevalent in fats (triglycerides)? Ester group

6) What major type of biomolecule is a triglyceride (do not say fat)? Lipids

Explanation / Answer

1) A simple soap is the sodium salt of carboxylic acid.

2) KOH

3) Glycerol (Propane - 1,2,3-triol)

4) Potassium salt of carboxylic acid is liquid soap, to get the solid, opaque soap it is required to convert the potassium soap to sodium soap.

5)Ester functional group is present in fats.

6) Lipids

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