In this experiment, I knew a new term which is saponification number and how to calculate its value. Every sample gave different reading based on the number of fatty acid in it. In this experiment, we used reflux, therefore I can improve my skill by using this technique as we seldomly used this technique in any experiment.
Reflection by Aqmarollah bin Mohd Nasip
Untuk eksperimen kali ini, saya dapat mengetahui maksud istilah “saponification number” dan tahu untuk mengira nilai tersebut. Daripada lima sampel yang diberi, kami dapat mengetahui nilai “saponification number” untuk setiap satu sampel tersebut. Setiap sampel sepatutnya memberi bacaan yang berbeza mengikut nombor asid lemak yang ada dalam sampel tersebut. Saya juga dapat memahirkan diri untuk membuat eksperimen berkaitan “reflux” kerana eksperimen ini melibatkan teknik tersebut.
Reflection by Afifah Syafikah binti Azizan
It’s
awesome to know more about lipids. From carry out this experiment, I got new
knowledge which is fats and oils are triesters of glycerol, they react with
water to form fatty acids and glycerin. When the reaction is carried out in a
basic solution, salts of the fatty acids are produced instead of the fatty acids
themselves. The salts of fatty acids are soaps and an individual molecule is
characterized by an ionic end which is the salt part and a nonpolar end which
is the hydrocarbon part. The ionic salt end is water-soluble and the nonpolar
hydrocarbon end is water insoluble.Then I also know how to identify them based
on their saponification number.
